Forgotten companies: Isaacson
Back in time when the track type tractor was still considered a new tool for earthmoving, there were dozens of companies offering attachments to outfit
Tag : Pullman-Standard
Classic Machines: The Allis-Chalmers HD-21 tractor
Developed directly from their model HD-20 (introduced 1951), the HD-21 featured among other things, one of the diesel engines from the recently acquired Buda Engine