Exhibit 10(b)
FORM OF CERTIFICATION FOR FORM N-CSR


I, Lisa J. Hartzell, certify that:

 1.  I have reviewed this report on Form N-CSR of Mairs and Power Growth Fund,
     Inc.

 2.  Based on my knowledge, this report does not contain any untrue statement of
     a material fact or omit to state a material fact necessary to make the
     statements made, in light of the circumstances under which such statements
     were made, not misleading with respect to the period covered by this
     report;

 3.  Based on my knowledge, the financial statements, and other financial
     information included in this report, fairly present in all material
     respects the financial condition, results of operations, changes in net
     assets, and cash flows (if the financial statements are required to include
     a statement of cash flows) of the registrant as of, and for, the periods
     presented in this report.




Date: March 4, 2003




                                                 /s/ Lisa J. Hartzell
                                                 -------------------------------
                                                     Lisa J. Hartzell, Treasurer



                                                                   Exhibit 10(b)
FORM OF CERTIFICATION FOR FORM N-CSR


I, George A. Mairs, III, certify that:

 1.  I have reviewed this report on Form N-CSR of Mairs and Power Growth Fund,
     Inc.

 2.  Based on my knowledge, this report does not contain any untrue statement of
     a material fact or omit to state a material fact necessary to make the
     statements made, in light of the circumstances under which such statements
     were made, not misleading with respect to the period covered by this
     report;

 3.  Based on my knowledge, the financial statements, and other financial
     information included in this report, fairly present in all material
     respects the financial condition, results of operations, changes in net
     assets, and cash flows (if the financial statements are required to include
     a statement of cash flows) of the registrant as of, and for, the periods
     presented in this report.




Date:  March 4, 2003




                                             /s/ George A. Mairs, III
                                             -----------------------------------
                                                 George A. Mairs, III, President