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Author
- AeroMetric, Inc.31
- Illinois State Geological Survey15
- Quantum Spatial, Inc. (formerly AeroMetric, Inc.)14
- Surdex Corporation10
- Federal Emergency Management Agency7
- Merrick & Co3
- Aero-Metric, Inc.1
- Barb Stiff1
- C. P. Weibel S. V. Panno1
- Donald A. Keefer, Illinois State Geological Survey1
- Herzog, B.L.. B.J. Stiff, C.A. Chenoweth, K.L. Warner, J.B. Sievering, C. Avery1
- Illinois State Water Survey1
- Quantum Spatial, Inc (formerly AeroMetric, Inc.)1
- The Sidwell Company1
- This data set was developed for the United States Geological Survey by Sanborn Mapping.1
- This data set was developed for the United States Geological Survey. by Sanborn Mapping.1
- U.S. Fish and Wildlife Service, Illinois Department of Natural Resources, and Illinois Natural History Survey1
- Wilson & Company, Inc.1