* over 4000 biographical entries
* over 5000 imprints
* almost 2700 wedge outlines
* almost 3000 individual ratings for judging relative scarcity and value.
This represents twice as much information as the 3rd edition and over 4 times more information than the 1983 edition!
The scope of the book is expanded by the "What's a Plane Worth" section, providing insights helpful in buying and selling planes, an illustrated glossary of plane terms and styles, and an extensive bibliography for further help in research. Comprehensive and up-to-date, A Guide to the Makers of American Wooden Planes IV is an absolutely essential reference for any tool collector or dealer.