Exhibit 24


POWER OF ATTORNEY

        The undersigned director of GATX Corporation, a New York corporation,
does hereby constitute and appoint Brian A. Kenney, Ronald J. Ciancio and
William M. Muckian or any of them, attorneys and agents of the undersigned, with
full power and authority to sign in such director's name, and on behalf of GATX
Corporation, the 2003 Annual Report on Form 10-K under the Securities Exchange
Act of 1934, together with any amendments thereto, hereby ratifying and
confirming all that said attorneys and agents and each of them may do by virtue
hereof.

        IN WITNESS WHEREOF, the undersigned has hereunto set his hand and seal.


                                                    /s/ Rod F. Dammeyer
                                                    ---------------------
                                                    Rod F. Dammeyer
                                                    Director


Date:  March 15, 2004



POWER OF ATTORNEY

        The undersigned director of GATX Corporation, a New York corporation,
does hereby constitute and appoint Brian A. Kenney, Ronald J. Ciancio and
William M. Muckian or any of them, attorneys and agents of the undersigned, with
full power and authority to sign in such director's name, and on behalf of GATX
Corporation, the 2003 Annual Report on Form 10-K under the Securities Exchange
Act of 1934, together with any amendments thereto, hereby ratifying and
confirming all that said attorneys and agents and each of them may do by virtue
hereof.

        IN WITNESS WHEREOF, the undersigned has hereunto set his hand and seal.


                                                      /s/ James M. Denny
                                                      --------------------
                                                      James M. Denny
                                                      Director


Date: March 15, 2004





POWER OF ATTORNEY

        The undersigned director of GATX Corporation, a New York corporation,
does hereby constitute and appoint Brian A. Kenney, Ronald J. Ciancio and
William M. Muckian or any of them, attorneys and agents of the undersigned, with
full power and authority to sign in such director's name, and on behalf of GATX
Corporation, the 2003 Annual Report on Form 10-K under the Securities Exchange
Act of 1934, together with any amendments thereto, hereby ratifying and
confirming all that said attorneys and agents and each of them may do by virtue
hereof.

        IN WITNESS WHEREOF, the undersigned has hereunto set his hand and seal.


                                                    /s/ Richard Fairbanks
                                                    -----------------------
                                                    Richard Fairbanks
                                                    Director



Date: March 15, 2004




POWER OF ATTORNEY

        The undersigned director of GATX Corporation, a New York corporation,
does hereby constitute and appoint Brian A. Kenney, Ronald J. Ciancio and
William M. Muckian or any of them, attorneys and agents of the undersigned, with
full power and authority to sign in such director's name, and on behalf of GATX
Corporation, the 2003 Annual Report on Form 10-K under the Securities Exchange
Act of 1934, together with any amendments thereto, hereby ratifying and
confirming all that said attorneys and agents and each of them may do by virtue
hereof.

        IN WITNESS WHEREOF, the undersigned has hereunto set his hand and seal.


                                                   /s/ Deborah M. Fretz
                                                   ----------------------
                                                   Deborah M. Fretz
                                                   Director


Date: March 15, 2004





POWER OF ATTORNEY

        The undersigned director of GATX Corporation, a New York corporation,
does hereby constitute and appoint Brian A. Kenney, Ronald J. Ciancio and
William M. Muckian or any of them, attorneys and agents of the undersigned, with
full power and authority to sign in such director's name, and on behalf of GATX
Corporation, the 2003 Annual Report on Form 10-K under the Securities Exchange
Act of 1934, together with any amendments thereto, hereby ratifying and
confirming all that said attorneys and agents and each of them may do by virtue
hereof.

        IN WITNESS WHEREOF, the undersigned has hereunto set his hand and seal.


                                                 /s/ Miles L. Marsh
                                                 --------------------
                                                 Miles L. Marsh
                                                 Director


Date: March 15, 2004




POWER OF ATTORNEY

        The undersigned director of GATX Corporation, a New York corporation,
does hereby constitute and appoint Brian A. Kenney, Ronald J. Ciancio and
William M. Muckian or any of them, attorneys and agents of the undersigned, with
full power and authority to sign in such director's name, and on behalf of GATX
Corporation, the 2003 Annual Report on Form 10-K under the Securities Exchange
Act of 1934, together with any amendments thereto, hereby ratifying and
confirming all that said attorneys and agents and each of them may do by virtue
hereof.

        IN WITNESS WHEREOF, the undersigned has hereunto set his hand and seal.


                                                 /s/ Michael E. Murphy
                                                 -----------------------
                                                 Michael E. Murphy
                                                 Director


Date: March 15, 2004




POWER OF ATTORNEY

        The undersigned director of GATX Corporation, a New York corporation,
does hereby constitute and appoint Brian A. Kenney, Ronald J. Ciancio and
William M. Muckian or any of them, attorneys and agents of the undersigned, with
full power and authority to sign in such director's name, and on behalf of GATX
Corporation, the 2003 Annual Report on Form 10-K under the Securities Exchange
Act of 1934, together with any amendments thereto, hereby ratifying and
confirming all that said attorneys and agents and each of them may do by virtue
hereof.

        IN WITNESS WHEREOF, the undersigned has hereunto set his hand and seal.


                                                  /s/ John W. Rogers, Jr.
                                                  -------------------------
                                                  John W. Rogers, Jr.
                                                  Director


Date: March 15, 2004




POWER OF ATTORNEY

        The undersigned director of GATX Corporation, a New York corporation,
does hereby constitute and appoint Brian A. Kenney, Ronald J. Ciancio and
William M. Muckian or any of them, attorneys and agents of the undersigned, with
full power and authority to sign in such director's name, and on behalf of GATX
Corporation, the 2003 Annual Report on Form 10-K under the Securities Exchange
Act of 1934, together with any amendments thereto, hereby ratifying and
confirming all that said attorneys and agents and each of them may do by virtue
hereof.

        IN WITNESS WHEREOF, the undersigned has hereunto set his hand and seal.


                                                /s/ Ronald H. Zech
                                                ----------------------
                                                Ronald H. Zech
                                                Director


Date: March 15, 2004