DIRECTOR’S POWER OF ATTORNEY

EX-24 3 exhibit24.htm POWERS OF ATTORNEY DIRECTOR’S POWER OF ATTORNEY

Exhibit 24

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-4 relating to the proposed merger of Mississippi Valley Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended).

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 25^th day of June, 2002.

/s/ Richard A. Abdoo

Richard A. Abdoo

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ David L. Andreas

David L. Andreas

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ Wendell F. Bueche

Wendell F. Bueche

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 28^th day of June, 2002.

/s/ Jon F. Chait

Jon F. Chait

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ Timothy E. Hoeksema

Timothy E. Hoeksema

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ Bruce E. Jacobs

Bruce E. Jacobs

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ Donald R. Johnson

Donald R. Johnson

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ Ted D. Kellner

Ted D. Kellner

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ D. J. Kuester

Dennis J. Kuester

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as her true and lawful attorney-in-fact for the purpose of: (i) executing in her name and on her behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-4 relating to the proposed merger of Mississippi Valley Bancshares, Inc. with and into Marshall & Ilsley Corporation and any related amendments (including post-effective amendments) and/or supplements to said Form S-4 (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended); (ii) generally doing all things in her name and on her behalf in her capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming her signature as it may be signed by the attorney-in-fact to the Form S-4 and any related amendments (including post-effective amendments) and/or supplements thereto (or any other registration statement for the same offering that is to be effective upon filing pursuant to Rule 462(b) under the Securities Act of 1933, as amended).

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as her true and lawful attorney-in-fact for the purpose of: (i) executing in her name and on her behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in her name and on her behalf in her capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming her signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ Katharine C. Lyall

Katharine C. Lyall

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ John A. Mellowes

John A. Mellowes

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ Edward L. Meyer, Jr.

Edward L. Meyer, Jr.

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 24^th day of June, 2002.

/s/ San W. Orr, Jr.

San W. Orr, Jr.

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ Robert J. O’Toole

Robert J. O’Toole

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ Peter M. Platten, III

Peter M. Platten, III

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ Robert A. Schaefer

Robert A. Schaefer

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 27^th day of June, 2002.

/s/ John S. Shiely

John S. Shiely

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ James A. Urdan

James A. Urdan

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ George E. Wardeberg

George E. Wardeberg

DIRECTOR’S POWER OF ATTORNEY

(Form S-4 Relating to the Proposed Merger of Mississippi Valley Bancshares, Inc. with and into

Marshall & Ilsley Corporation)

DIRECTOR’S POWER OF ATTORNEY

(Form S-8 for the Mississippi Valley Bancshares, Inc. Option Plans)

The undersigned director of Marshall & Ilsley Corporation designates each of M.F. Furlong and R.J. Erickson, with the power of substitution, as his true and lawful attorney-in-fact for the purpose of: (i) executing in his name and on his behalf Marshall & Ilsley Corporation’s Registration Statement on Form S-8 relating to the Mississippi Valley Bancshares, Inc. Option Plans and any related amendments (including post-effective amendments) and/or supplements to said Form S-8; (ii) generally doing all things in his name and on his behalf in his capacity as a director to enable Marshall & Ilsley Corporation to comply with the provisions of the Securities Exchange Act of 1934, as amended, the Securities Act of 1933, as amended, and all requirements of the Securities and Exchange Commission; and (iii) ratifying and confirming his signature as it may be signed by the attorney-in-fact to the Form S-8 and any related amendments (including post-effective amendments) and/or supplements thereto.

The following signature is applicable to both of the foregoing Powers of Attorney and may be filed with the Securities and Exchange Commission in typed form separately with each Power of Attorney.

Dated this 20^th day of June, 2002.

/s/ J.B. Wigdale

James B. Wigdale