Earthworm Tractors

Have you ever heard of Earthworm Tractors? Neither had I. At least not until one of the Museum’s intrepid volunteers, Gail Erwin, came across the name on a paper in one of our collections. The document dated from the 1930s, and the imagery it evokes was obviously intended to remind readers of Caterpillar Tractors, whose origins . . . → Read More: Earthworm Tractors