Allis Chalmers 1 Avery 1 Case 1 Caterpillar 1 Chevrolet 19 Cletrac 1 CO-OP 1 Dodge 30 Fargo 1 Farmall 1 Federal 1 Ford 28 Ford Tractor 14 Fordson 1 GMC 4 Harley-Davidson 2 Huber 1 John Deere 1 Kenworth 1 Love 1 Massey-Harris 1 McKormick-Deering 1 Minneapolis Moline 1 Oliver 1 Reo 1 Silver King 1 Studebaker 9 Willys 9