- Cram1
- D. Frank Dreher1
- David L. Curtice (Saint Paul, Minnesota), 18871
- Department of Geography, Indiana University1
- Department of HIghways (St. Paul, Minnesota)1
- Division of Planning, Indiana State Highway Commission1
- Engineering Dept.1
- F.L. Knight & Sons1
- G.M. Hopkins Co. (Philadelphia, Pennsylvania), 19161
- Geological Survey (Washington D.C.)1
- H.H. Mortorff?1
- Highway Map Co.1
- Hudson Co., (Minneapolis)1
- Hudson Map Company (Minneapolis, Minnesota), 19221
- I.H. Ragsdale1
- Indiana Department of Conservation1
- Indianapolis Map & Platting Co.1
- J. Betts (London)1
- J.C. Juta & Co.1
- Julius Bien & Co.1