Creator
- Clason Map Co.1
- Craig, Donald.1
- Desilver, Charles.1
- Dickson, Melzar M.1
- Dodd, Mead & Company1
- Easley, Frank.1
- Evinger, Morris I.1
- Featherstonhaugh, George William, 1780-18661
- Freeman, Homer J.1
- Gillis, J. R.1
- Gray, Frank A.1
- Gray, Ormando Willis1
- Griffith, W. I.1
- H.M. Gousha Company.1
- Hammond, W. G.1
- Harrison & Warner.1
- Hawley, F. K.1
- Henn, Williams and Co.1
- Iowa City (Iowa). City Engineer's Office.1
- Iowa Engineering Co.1