"Antique Tractor Bible" by Spencer William Yost, Spencer Yost - August 1998 "How to Rebuild and Restore Farm Tractor Engines" by Spencer Yost - May 2000 "How To Restore Your John Deere 2-Cylinder Tractor" by Spencer Yost - September 2002) This is how they are listed at Amazon.com H. L. Staples McLoud, Oklahoma USA