Classic Machines TractorsClassic Machines: The Caterpillar D8 tractorContrafed PUblishingMarch 29, 2016June 12, 2020 by Contrafed PUblishingMarch 29, 2016June 12, 2020 A true classic tractor in every sense of the word, the Caterpillar D8 has been around in various forms since 1935. BY RICHARD CAMPBELL This...