Oliver 'Hart-Parr' 18-28 agricultural tractor on steel wheels, by the Oliver Farm Equipment Company, Charles City, Iowa, U.S.A., Serial No. 802529, 1936. Engine: 4-cylinder overhead valve gasoline (petrol)/kerosene/distillate. Oliver 'Hart-Parr' 18-28 agricultural tractor on steel wheels 1936
Oliver '80' rowcrop agricultural tractor on 'narrow-vee' dual steel front wheels and 'tip-toe' steel rear wheels, by Oliver Farm Equipment Company, Charles City, Iowa, U.S.A., Serial No. 111486 KD, 1944. Engine: 4-cylinder overhead valve gasoline (petrol)/kerosene/distillate. Fitted with power take-off and gear-box operated mechanical implement lift. Oliver '80' rowcrop agricultural tractor on 'narrow-vee' dual steel front wheels and 'tip-toe' steel rear wheels 1944