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| Date: | 05 14 1927 |
|---|---|
| Description: | Farmer and mechanic F.L. Zybach, 32, standing beside his invention -- a Fordson tractor with a front-mounted plow equipped for "driverless operation." Orig... |
| Date: | 1938 |
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| Description: | Man plowing a field with an experimental Farmall F-22 tractor. |
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