Allis Chalmers 1 Avery 1 Bentley 1 Buick 37 Cadillac 30 Case 1 Caterpillar 1 Chevrolet 45 Chrysler 31 Cletrac 1 CO-OP 1 Crosley 2 DeSoto 33 Diamond T 1 Dodge 44 Eagle 1 Farmall 1 Federal 1 Ford 57 Ford Tractor 16 Fordson 1 GMC 14 Graham 7 Graham-Bradley 1 Harley-Davidson 2 Huber 1 Hudson 15 Hupmobile 5 International 3 Jaguar 1 John Deere 1 LaSalle 18 Lincoln 27 Love 1 Massey-Harris 1 McKormick-Deering 1 Mercedes-Benz 1 Mercury 33 MG 3 Minneapolis Moline 1 Nash 16 Oldsmobile 31 Oliver 1 Packard 27 Plymouth 38 Pontiac 34 Reo 1 Silver King 1 Studebaker 30 Willys 15 Yellow Coach 4