| description: | Close Up Of "Best" Sidehill Harvester In Operation From 1900 To 1906; The Parent Of Our Modern Combine. Both "Holt" & "Best" Machines Were Of The Pull Type And Cost $1.25 To $1.50 To Operate Including Maintenance, Depreciation, Labour & Horses. This Outfit Used A Mixture Of 24 Horses & Mules. "Best" And "" Joined Together In1910 - 1920 To Form The Present "Caterpillar Tractor Co" |