1 Exhibit 16 [Deloitte & Touche LLP Letterhead] September 23, 1997 Securities and Exchange Commission Mail Stop 9-5 450 5th Street, N.W. Washington, D.C. 20549 Dear Sirs/Madams: We have read and agree with the comments in Item 4 of Form 8-K of Emerald Financial Corp. dated September 17, 1997. Yours truly, /s/ Deloitte & Touche LLP