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File:Pullford auto-to-tractor conversion advert 1918.png


English: A 1918 advertisement for auto-to-tractor conversion kits by the Pullford Company of Quincy, Illinois, USA, at a time when the idea was popular and dozens of companies offered such kits.
Date 1918
Source Pullford Company (1918), "Pullford Company advertisement, page 43", The American Blacksmith Auto and Tractor Shop 17 (12), 
Author Pullford Company


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