Heisey Glass 1896-1957 by Neila Bredehoft, Tom Bredehoft (2001, Hardcover, Illustrated)

This is the best book that I have found to serve as an all around resource/field guide when I am Heisey shopping. It contains lots of pictures to help identify most common patterns, and prices to serve as a general guide as to what to pay (in my case I never pay more than 1/2 of what it lists unless it's a piece that I really, really have to have)