The Colburn Automobile Company was a Brass Era car manufacturer in Denver, Colorado. The company produced cars from 1906-1911. in their factory at 15th Street and Colfax Avenue. Colburns were built as a roadster, and later as a touring car (Model 35). They were fashioned after the French Renault with the radiator positioned behind the sloping hood. The Model 30 and Model 40 roadsters were fast with a top speed of 72 miles per hour and often competed in road races and track events around the Denver area. The roadster featured a 4-cylinder, 40HP engine and 4 speed transmission and sold for $4,500.00. A large shiny brass "C" emblazoned the front of the automobiles.