Colby Motor Company was an American automobile manufacturer based in Mason City, Iowa, that operated from 1911 to 1914. The company was founded by William Colby, who had previously partnered with David W. Henry, known for producing the Henry car in Muskegon, Michigan. Colby Motor Company introduced its first model, featuring a conventional design powered by a 40-horsepower four-cylinder Excelsior engine, and successfully completed 100 units by…