Bulldozer: 1959(?) based on serial number beginning 8357
Model (partial) 6K3, 6 cylinder diesel.
Drott Manufacturing Company manufactured industrial equipment. Drott is best know for the 4 in 1 bucket and International Harvester tracked loaders.

Drott Tractor Company was founded by Edward Drott in Butternut, Wisconsin in 1916. In 1923 the company was moved to Wausau, Wisconsin. In 1924, it moved to Milwaukee, Wisconsin and was renamed Hi-Way Service Corporation. Hi-Way Service became Drott Manufacturing Company and moved back to Wausau, Wisconsin.

In 1968, Tenneco Corporation purchased Drott where it became a division of Tenneco's Case Corporation. In 1985 Case acquired assets of International Harvester's agricultural equipment operations becoming Case IH.