Here's my first Confession of a How-To book junkie.
A Writer's Reference, third edition, by Diana Hacker.
ISBN 0-312-13417-7 Still in print!
This was recommended as a good Grammar text, and it has a handy index on the inside front cover, and all the sections are tabbed with cardstock pages for quick reference. Spiral bound, so if you pick up a used copy make sure all the pages are there. I can imagine someone just pulling out the pages they needed for a test. The sections aren't in alphabetical order, strangely enough (section C is first, and A and B are in the back).
I haven't used it much, but lately it's been out on my desk and I've been looking through it. I just found section W1, "Glossary of Usage" which looks to be the sort of items that Eric Patridge covers in Use and Abusage, but in less than 20 pages.
Geared toward research paper writing, there isn't much on creative writing, but if you need help with grammar or the basics of English, this would be a good place to start.
