Table of contents Avery -- Bates -- Bull -- COD -- Common sense -- Co-op -- Custom -- Eagle -- Flour City -- Ford (not Henry) -- Grain Belt -- Gray -- Hackney Auto-plow -- Happy Farmer -- Hart-parr -- Heider -- Huber -- Keck-Gonnerman -- Lauson -- Liberty -- Lion -- Little giant -- Megow Convertible -- Minneapolis Steel and Machinery Company (Twin City Tractor) -- Minnesota thresher -- Minneapolis Threshing -- Pan -- Pioneer -- Rumely -- Russell -- Sageng -- Samson -- Sawyer-Massey -- Scientific's Princess...