- McLean County Historical Society, Bloomington, Ill
- University of Illinois at Urbana-Champaign, University Library
This photo of a cornfield on Farm 46 near Heyworth in 1997 shows the difference in crop production today from that in the 1930s. Technology and economic prosperity affected the production of corn. How we learn about communities; Communities and Geography; American Communities in History. 15 Economics; 16 History; 18 Social systems.
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