Celebrating the 100-Year Anniversary of the Caterpillar Sixty Track-Type Tractor

https://www.caterpillar.com/history... First sold as the Best 60 in 1919, the Caterpillar Sixty track-type tractor would go on to become one of the company’s most successful models of track-type tractors. Its innovations in engineering can be found in the DNA of today’s lineup of Cat dozers.