Date: | 1938 |
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Description: | Cover of a brochure featuring an illustration of an offset disk harrow pulled by a TracTractor (crawler tractor). In the background is a farm. |
Date: | 1940 |
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Description: | Three-quarter view from front right of two men, Grant Porter and L.M. Porter working in a field harvesting seed from 60 of 200 acres in alfalfa. 3200 acre ... |
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