The Elusive Haas Tractor

Collectors search for clues to the short-run Haas tractor line

The Haas Model 6-12 engine used in the Haas Model B tractor
The Haas Model 6-12 engine used in the Haas Model B tractor. The air-cooled, 1-cylinder, 4-cycle engine was manufactured by Haas Motors Corp., Racine, Wis.