Collector's Guide to American Transportation Toys 1895 to 1941 by Joe and Sharon Freed  Freedom Pub
The Freed book is one of a kind. I have many similar attempts on my bookshelf, but this one is the most thumbed-through, and clearly the most useful. For American toys only, and the better quality and older ones. The book was assembled in the spirit of scholarship, not glitz, and I even doubt if the author has a toy collection. Many photographs, detailed description, approximate costs at auction or sale are all there. I went to the trouble to call the author to thank him for this fine effort. Paperback keeps it cheap...if you can find it.
The book is in very good vintage condition Front cover has been creased. ri