Sources of power on

199 crop acres 200 crop acres 21 per cent 49 and less 49 or less 99 crop acres per farm Agriculture automobile belt Bull census cent of farms cent reported compared corn picker County custom decrease disk displaced electric motors estimated farm 49 farm business farm family farm horses farm power farmers farms Crop acres farms having 50 farms reported farms using tractors farms with tractors gang plows gasoline geldings grain horses and mules horses on farms horses per team increase larger mares Middle Atlantic miles driven MILES PER FARM MINNESOTA FARMS Motor Trucks North Dakota NUMBER OF FARMS number of horses old and older pounds power line power take-off present number private plants source of farm source of power spike-tooth drag spring-tooth harrow stationary gas engines steam tractors Steele County threshing Total or average tractors for drawbar two-plow two-row cultivator U. S. Dept United West North Central Whippets ΙΟ