Massey Harris '44, 1940s.

A farmer, dressed for cold weather, standing next to a Massey-Harris '44. This photo appears to be the partner to this photo - the camera was traded, giving us a rare look at the photographer of most of these photos.

John Deere 820, 1960s

The John Deere 820 was, by some accounts, manufactured in the late 1950s, although some for sale say they were made in the 1970s. Known for its large-displacement 2-cylinder motor with excellent gear ratio, the 820 has been popular in tractor-pull events due to its inability to stall. This photo was the tail-end of a roll of slide film, and the film wasn't large enough to fit into a standard slide frame. The owner made due by tracing a slide frame onto cardboard, cutting it out, and taping the film into it.