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Author
- AeroMetric, Inc.31
- Illinois State Geological Survey23
- University of Chicago Social Science Research Committee18
- Quantum Spatial, Inc. (formerly AeroMetric, Inc.)14
- University of Chicago Department of Sociology14
- Surdex Corporation10
- Federal Emergency Management Agency7
- Quantum Spatial, Inc.7
- Wilson & Company, Inc.6
- Merrick & Co5
- Mayer, Harold M (Harold Melvin),1916-19944
- Abert, Curtis C.2
- Graham, J. D. (James Duncan), 1799-1865.,United States. Army. Corps of Topographical Engineers.2
- Lisa Smith Chris Goldsmith Donald Luman2
- Reckless, Walter C ,1899-19882
- Shaw, Clifford R (Clifford Robe),1895-19572
- U.S. Geological Survey2
- unknown2
- Aero-Metric, Inc.1
- Barb Stiff1