The Following Sources were used for Information on the Chapter 12 Web site:
I would like to thank the hundreds of people who have contacted me to contribute their information about Antique Caterpillar Machinery.
Books:
The Caterpillar® Century by: Eric C. Orlemann
Caterpillar by: Randy Leffingwell
Classic Caterpillar Crawlers by: Keith Haddock & Eric C. Orlemann
Caterpillar Pocket Guide by: Bob LaVoie
Track-Type Machines 1925-1960 By: ACMOC
TV:
RFD TV Shows; Classic Tractor's, and Machinery of the Past
Internet Source:
and many others....
If you have any questions or would like to contribute more data please contact me, Erik Christenbury