CaterpillarCaterpillar’s first D9 tractorContrafed PUblishingMarch 28, 2016September 23, 2024 by Contrafed PUblishingMarch 28, 2016September 23, 2024 When released in 1955, the Caterpillar D9D was one of the world’s largest and heaviest track type tractors, only exceeded in size by the Euclid...
