Date: | 1920 |
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Description: | Front cover of a booklet advertising the Bullock Creeping-Grip tractor featuring an illustration of a farmer using the tractor in a field against a setting... |
Date: | 1915 |
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Description: | Front cover of a pamphlet advertising the Bullock Tractor Company. A photograph of a man using the tractor in a farm field is accompanied by the text: "Wor... |
Date: | 1920 |
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Description: | Advertisement for the Bullock Creeping-Grip crawler tractor featuring a photograph of a man standing while using the machine. |
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