Certification Filed as Exhibit 11(b) to Form N-CSR

                                  CERTIFICATION


     I, Mark R.  Fetting,  Chief  Executive  Officer of Legg Mason Cash  Reserve
Trust, Inc. ("Trust"), certify, that to my knowledge:

1. The Trust's periodic report on Form N-CSR for the period ended August 31,
2004 fully complies with the requirements of Section 13(a) or Section 15(d) of
the Securities Exchange Act of 1934 (15 U.S.C. Section 78m(a) or 78o(d)); and

2. The information contained in such Form N-CSR fairly presents, in all material
respects, the financial condition and results of operations of the Fund.




/s/ Mark R. Fetting                                           11/15/04
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Mark R. Fetting                                               Date
President







               Certification Filed as Exhibit 11(b) to Form N-CSR

                                  CERTIFICATION


     I, Marie K. Karpinski,  Chief Financial  Officer of Legg Mason Cash Reserve
Trust, Inc. ("Trust"), certify, that to my knowledge:

1. The Trust's periodic report on Form N-CSR for the period ended August 31,
2004 fully complies with the requirements of Section 13(a) or Section 15(d) of
the Securities Exchange Act of 1934 (15 U.S.C. Section 78m(a) or 78o(d)); and

2. The information contained in such Form N-CSR fairly presents, in all material
respects, the financial condition and results of operations of the Fund.




/s/ Marie K. Karpinski                                        11/15/04
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Marie K. Karpinski                                            Date
Vice President and Treasurer