Abstract This collection is made up of thirteen photocopies of engineering drawings of cars and trucks designed by Mr. Ernest Rosenberger of the Four Traction Auto Company. The drawings contain views of both entire vehicles and parts of the chassis and drive gear, but are not to scale. Included in these drawings are depictions of a twelve-passenger automobile, a 1 1/2 ton truck, two fire engines, and car and light truck chassis and axles. The original drawings are in the collections of the Minnesota...