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| Date: | 1939 |
|---|---|
| Description: | Elevated view of men field testing an experimental McCormick-Deering 12 foot combine with a Farmall M tractor. |
| Date: | 12 20 1943 |
|---|---|
| Description: | Research engineer A.B. Welty stands next to the moisture controlling device at International Harvester Company's farm machinery engineering department. The... |
| Date: | 1942 |
|---|---|
| Description: | Seven men in overalls and hats are standing on or near an experimental 12 ft self propelled combine in a field. |
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