Advance-Rumely • Allis-Chalmers • Aultman-Taylor • Avery • B.F.Avery & Sons Co. • Bates • Baker • Best • Bull • Case • J.I. Case • Caterpillar • Cletrac • Cockshutt • Denning Tractor Co. • Eagle • Famo • Fairbanks-Morse • Farmall • Flour City • Fordson/Ford • Gray Tractor Co. • Gibson • GO/General Ordnance Co. • Hart-Parr • Heider • Holt • Huber • Illinois Tractor Co. • International • Jackson John Deere • Minneapolis-Moline • Mogul • Morton Tractor Co., Harrisburg, Pennsylvania • Morton Tractor Co., Fremont, Ohio • Nichols & Shepard • Oliver • Parrett • Rock Island • Rumely Oil Pull • Samson • Shepard • Simpson • Stock • Twin City Tractors • Wallis • Yuba • Waterloo Gasoline Engine Company