A Good Look At An Operating 1929 Caterpillar SIXTY - YouTube
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Just A Car Guy: Caterpillar Sixty silver and gold models were made for the 60th anniversary of the 1931 tractor
Antique Caterpillar Sixty Crawler | BidCal, Inc. - Live Online Auctions
Michigan CAT - The Caterpillar Diesel Sixty Tractor was the first diesel tractor model produced by Caterpillar. Any guesses on what year it was introduced? | Facebook