Allis Chalmers 1 Avery 1 Bentley 1 Buick 33 Cadillac 31 Case 1 Caterpillar 1 Chevrolet 40 Chrysler 32 Cletrac 1 CO-OP 1 Crosley 2 Delage 1 DeSoto 31 Diamond T 1 Dodge 48 Eagle 1 Fargo 1 Farmall 1 Federal 1 Ford 59 Ford Tractor 16 Fordson 1 GMC 9 Graham 8 Graham-Bradley 1 Harley-Davidson 2 Huber 1 Hudson 15 Hupmobile 6 International 2 Jaguar 2 John Deere 1 LaSalle 20 Lincoln 28 Love 1 Massey-Harris 1 McKormick-Deering 1 Mercedes-Benz 1 Mercury 36 MG 3 Minneapolis Moline 1 Nash 16 Oldsmobile 30 Oliver 1 Packard 26 Plymouth 36 Pontiac 30 Reo 5 Silver King 1 Studebaker 31 Willys 15 Yellow Coach 1