Keck-Gonnerman Tractors
Keck-Gonnerman manufactured tractors, steam engines, and other farm machinery in Indiana. Growing out of a blacksmith shop, Keck-Gonnerman began manufacturing kerosene tractors in 1917. Several standard-tread tractor designs followed, but Keck-Gonnerman tractor designs did not keep up with the rapid changes of the 1920s and tractor production ended by 1937. Production of other equipment, including combines, continued until 1955.
Keck-Gonnerman Tractors
| Keck-Gonnerman 12-24 | Power: 13 hp | Date of manufacture : 1917 - 1918 |
| Keck-Gonnerman 15-30 | Power: 16 hp | Date of manufacture : 1920 - 1927 |
| Keck-Gonnerman 18-35 | Power: 38 hp | Date of manufacture : 1928 - 1937 |
| Keck-Gonnerman 25-50 | Power: 55 hp | Date of manufacture : 1928 - 1937 |
| Keck-Gonnerman 30-60 | Power: 66 hp | Date of manufacture : 1928 - 1937 |