1 [ERNST & YOUNG LLP LETTERHEAD] December 30, 1996 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, DC 20549 Gentlemen: We have read Item 4 of Form 8-K dated December 31, 1996, of Index, Inc. and are in agreement with the statements contained in the second and third paragraphs on page 2 therein. We have no basis to agree or disagree with other statements of the registrant contained therein. Very truly yours, /s/ ERNST & YOUNG LLP -------------------------------- Ernst & Young LLP