Apperson 1 Auburn 7 Biddle 6 Bugatti 1 Buick 10 Cadillac 10 Case 7 Chevrolet 17 Citroen 1 Cleveland 1 Cole 6 Cunningham 6 Dodge 5 Du Pont 1 Elcar 2 Essex 1 Ford 28 Fordson 1 Franklin 6 Hispano-Suiza 2 Hudson 10 Hupmobile 6 Jordan 2 Locomobile 6 Mack Trucks 1 Marmon 6 Maxwell 6 Mitchell 3 Nash 6 Oakland 6 Oldsmobile 8 Packard 7 Paige 7 Pierce-Arrow 7 Reo 9 Roamer 2 Rolls Royce 1 Studebaker 8 Stutz 7 Velie 6 Willys 11 Winton 4