c. 1910s Flour City 30-50 Tractor

 This tractor (serial #2079) was made by the Kinnard-Haines Company, later called Kinnard & Sons Manufacturing Company, in Minneapolis, Minnesota. The company was initially established by O. B. Kinnard and Albert Haines in 1889 as the Kinnard Press Company, a maker of hay presses and other items. By 1900, the company had built its first tractor. In 1901, the company became Kinnard-Haines, and tractor production expanded. The company would build 20-35, 30-50, and 40-70 tractor models, producing the 30-50 from 1911 to 1927. Kinnard-Haines took the name for their tractors – "Flour City" – from Minneapolis' own nickname, Minneapolis having been an important center for the flour milling industry.

From Thresherman's Review and Power Farming,
vol. XXII, no. 7 (July 1913), p. 22.