- Haydon, William4
- Henderson, Albert4
- Hendges, M.4
- Hondius, Jodocus, 1563-16124
- Hopkins, Griffith Morgan, Jr.4
- Host, Trevor K.4
- Illinois State Geological Survey4
- J.H. Colton & Co4
- Jefferys, Thomas, -17714
- Johnson, A. J. (Alvin Jewett), 1827-18844
- Levinson, David M.4
- Luffman, J. (John), 1756-18464
- Max Freissler (Firm)4
- Mills, Ira B.4
- Minneapolis (Minn.). Engineer Department4
- Minneapolis, St. Paul & Sault Ste. Marie Railway Company4
- Mudgett, Helen Parker, 1900-19624
- Oldham, Jerry B.4
- Ontario. Bureau of Mines4
- Peterson, Dean M.4