Floyd Clymer, Album of Historical Steam Traction Engines, Bonanza 1949
I posted a small Avery gas tractor a few days ago, turns out there were two unrelated Avery Farm machinery companies. This one was a large innovative farm implement company started after the Civil War. It enjoyed prosperity making threshers and steam tractors for a number of decades but the rest of the world had caught up by World War 1. The company struggled through the Depression and by WW2 closed its doors for good.