- McLean County Historical Society, Bloomington, Ill
- University of Illinois at Urbana-Champaign, University Library
This drawing shows a heavy prairie-breaking plow used in early McLean County. Because of the tough prairie ground, a heavy plow was needed to break up the land for planting. How we learn about communities; Communities and Geography; American Communities in History. 15 Economics; 16 History; 18 Social systems.
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