sheep, animal husbandry department
Cooperative Extension Service, South Dakota State College of Agriculture and Mechanic Arts
Sheep production in South Dakota has been increasing from year to year, reaching its greatest development at the beginning of 1,934 with approximately 1,300,000 ewes and ewe lambs on South Dakota farms and ranches. In spite of a series of dry seasons this number has been reduced but slightly and it may be said that the state's sheep breeding population remains well above a million head annually. The more recent development has been in the farm flocks in the eastern part of the state, farmers realizing that sheep are coming through with two cash returns annually – one on wool and the other on meat.
Johnson, I. B., "Sheep" (1937). SDSU Extension Circulars. 366.