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Creator
- Sanborn Map Company1,787
- Geological Survey (U.S.)283
- United States. Soil Conservation Service36
- University of Chicago Library32
- University of Chicago. Social Science Research Committee18
- Owen, Andrew14
- University of Chicago. Department of Sociology14
- Murphy, Brendan12
- Mitchell, S. Augustus (Samuel Augustus), 1792-18687
- Illinois State Geological Survey4
- Levinson, David M4
- Mayer, Harold M. (Harold Melvin), 1916-19944
- Rand McNally and Company4
- Young, J. H. (James Hamilton)4
- Peck, John Mason, 1789-18583
- Blanchard, Rufus, 1821-19042
- Cram, George Franklin, 1841-19282
- Reckless, Walter C., 1899-19882
- Shaw, Clifford R. (Clifford Robe), 1895-19572
- United States. General Land Office2