Great book on the subject, very informative, fantastic pictures of most subjects covered. Price guide a bit outdated, but gives you an idea of where to start on their values. Anyone who is a collector of "so-called dollars" should have this book in their library.
A GREAT book for So Called Dollar collectors. New editions are being published in segments by Jeff Shelvin and Bill Hyder.
Google, Jeff Shelvin or socalledollarguy