Special Edition Using Excel for Windows 95 by Ron Person
… Published by QUE Corporation (ISBN 0-7897-0112-X)
The secrets to unleashing the full power of Excel for Windows 95 – at your fingertips. Quotes the back.
Well, I don’t know about secrets as such, but it is as in-depth as you’d like, though I’d personally be happier if the section covering macros was somewhat larger. If you are serious about spreadsheets, the 1200+ pages here make for a very good reference book.