International Harvester introduced the H and M tractors in mid-1939 as the replacements for the F-20 and F-30 with the H rated as a 2-plow tractor and the M as a 3-plow tractor.

International Harvester started production of the International 8-16 tractor with a small preproduction run in 1917 and regular production in 1918. It was a 2-plow tractor with a vertical 4 ...