Allen Motor Company was an American automobile manufacturer active from 1913 to 1922, with its operations based in Fostoria, Bucyrus, and Columbus, Ohio. The company was known for producing a range of vehicles, primarily featuring a well-regarded 4-cylinder engine designed in-house. This engine had a displacement of 3.1 liters and utilized a side-valve configuration. During its operational years, Allen Motor Company offered a complete lineup of…