Creator
- Ely Commercial Club (Ely, Minn.)1
- Freeman, Homer J.1
- Geographical Publishing Co.1
- Great Britain. Ordnance Survey1
- Griffith, W. I.1
- Hawley, F. K.1
- Hendrickson, B. H. (Bertram Higbie),1892-surveyor1
- Iowa Geological Survey1
- Iowa State College. Library1
- Iowa State Conservation Commission. Biological Survey Unit1
- Iowa. Fish and Game Commission1
- Iowa. Highway Commission1
- Iowa. State Planning Board. Biological Survey1
- Iowa. State Planning Board. Biological Survey Unit1
- Iowa. State Planning Board. Committee on Health1
- Iowa. State Planning Board. Committee on Industry1
- Iowa. State Planning Board. Committee on Land Purchase Mortgage1
- Iowa. State Planning Board. Committee on Public Education1
- Iowa. State Planning Board. Committee on Rural, Secondary, & Adult Education1
- Iowa. State Planning Board. Committee on Soil Conservation1