Allis Chalmers 1 Armstrong-Siddeley 1 Avery 1 Bentley 2 Brockway 2 Buick 39 Cadillac 32 Case 1 Caterpillar 1 Chevrolet 52 Chrysler 29 CO-OP 1 Crosley 4 DeSoto 29 Diamond T 1 Dodge 53 Fargo 3 Farmall 1 Federal 1 Ferguson Tractor 2 Ford 51 Ford Tractor 14 Fordson 1 GMC 14 Harley-Davidson 2 Huber 1 Hudson 14 International 4 Jaguar 4 Jeep 24 John Deere 1 Lincoln 23 Love 1 Massey-Harris 1 McKormick-Deering 1 Mercedes-Benz 1 Mercury 31 MG 5 Minneapolis Moline 1 Nash 13 Oldsmobile 46 Oliver 1 Packard 17 Peugeot 1 Plymouth 39 Pontiac 38 Renault 1 Silver King 1 Simca 1 Studebaker 20 Triumph 1 Volkswagen 3 Reo 1