Creator
- Griffith, W. I.1
- H.M. Gousha Company.1
- Hammond, W. G.1
- Harrison & Warner.1
- Hawley, F. K.1
- Henn, Williams & Co.2
- Henn, Williams and Co.1
- Huebinger Surveying and Map Publishing Co.2
- Huebinger, M. (Melchior)140
- Iowa City (Iowa). City Engineer's Office.1
- Iowa Engineering Co.1
- Iowa Geological Survey3
- Iowa Geological Survey.2
- Iowa Publishing Co.3
- Iowa State College. Department of Civil Engineering1
- Iowa State College. Library1
- Iowa State Conservation Commission. Biological Survey Unit1
- Iowa State University. Library1
- Iowa. Board of Railroad Commissioners2
- Iowa. Board of Railroad Commissioners.3