EXHIBIT 16.1 ARTHUR ANDERSEN 									____________________ March 31, 1999	 						Arthur Andersen LLP 								_______________________ 									425 Walnut Street 									Cincinnati, OH 45202 									513 381 6900 Office of the Chief Accountant Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 Dear Sir/Madam: We have read Item 4 included in the Form 8-K/A dated March 29, 1999 of Firstar Corporation filed with the Securities and Exchange Commission and are in agreement with the statements contained therein. Very truly yours, /s/ Arthur Andersen LLP - ----------------------- Arthur Andersen LLP CJC Copy to: David Moffett, CFO, Firstar Corporation