I thought the article on International crawlers (Farm Collector, January 2007) was good. Our family goes back to the 1920s with International Harvester. The first crawler was a TD-40: I still have the invoice for a TD-35. We then went to the 9s to the 24s. In the end, they did lose out to the competition. The blood ran red in our veins until we had to go with Cat.