The yellow ‘49 TD-6 belongs to the Farster family, who painted it in the later Industrial Yellow Paint scheme. In the first generation of the TD-6, IH had not yet adopted this yellow for the crawler lines, which were sold as much for ag as for construction, but we see a lot of early crawlers painted yellow by owner preference. This TD-6 mounts a Bucyrus-Erie (B-E) Bullgrader attachment. At the time this crawler was built, B-E and IH had a pretty tight relationship and B-E dozer products were the approved parts for IH crawlers. In 1953, I-H implemented an arrangement to distribute B-E products through the IH dealer network and eventually bought that part of B-E and began manufacturing the products. The Bullgrader attachment differed from the Bulldozer in having an angling feature on the blade.
The 1950s was the last decade in which the small crawler was a player in the agricultural tillage game. To that time, crawlers (A.K.A. tracklayers) offered farmers a lot of drawbar power in a small and economical package