Description: Map showing the numbers and location of hogs produced in the United States in 1880. "The center of greatest production had shifted by 1880 to western Illinois, eastern and southern Iowa, and northwestern Missouri. The present Corn Belt area was nearly all occupied by hogs. Production in the East continued to decline."—United States Department of Agriculture Yearbook, 1923
Source: , United States Department of Agriculture Yearbook 1922 (Washington D.C., Washington D.C.: Government Printing Office, 1923) 189
Map Credit: The Private Collection of Roy Winkelman |
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