- McLean County Historical Society, Bloomington, Ill
- University of Illinois at Urbana-Champaign, University Library
This early moldboard plow was used to open new land for cornfields in spring. Field strips were plowed four feet apart, dictated by the width of the horse. Cross planting at 90 degrees was essential to prevent weeds from choking corn plants. How we learn about communities; Communities and Geography; American Communities in History. 15 Economics; 16 History; 18 Social systems.
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