John Deere Model A

Grandpa had one of these he was restoring about 25 years ago, but he got rid of it when he moved off the farm.

This one wasn't his.  Anyway, a history of the model A here.  Of note:

During World War II all American manufacturers were under control
by the War Production Board. Nothing could be exported without
a license. Lend Lease began in late 1942 and covered tractors, plus
some equipment. One Lend Lease contract covered 1584 Model A
tractors. Another sent 1000 Model H's to Russia.