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Creator
- Schellie Associates13
- Montgomery, Pauline12
- Sponsor: Robert L. Campbell6
- Cisneros, José2
- Editor: Elizabeth Hogan2
- Editor: John Gilmore2
- Sponsor: Dr. Victor Bogle, Robert D. Hennon2
- Abrams Aerial Survey Corporation1
- Bugbee, Harold1
- DeGrazia, Ted1
- Editor: John B. Turpin1
- Editor: John Brandon1
- Editor: Kenneth Dorsett1
- Editor: Lantz Alter, Dan Fogerty1
- Editor: Tom Green1
- Geological Survey (U.S.)1
- George F. Cram Company1
- Hutchison, Harold C. (Harold Christy), 1925-1
- Indiana. Department of Conservation1
- Indiana. State Highway Commission (1961-1981)1