- Mattke, Ryan2
- McSwiggen, Peter L.2
- Meints, Joyce P.2
- Minn Saint Louis County Highway Dept.2
- Minnesota Forest Service2
- Minnesota Transfer Board of Trade.2
- Minnesota. Division of Waters2
- Minnesota. State Drainage Commission.2
- Mossler, J.H2
- Nemitz, M.2
- Phippen, S.J.2
- Poole Brothers2
- R.W. Johnson & Son (Firm : Saint Paul, Minn.)2
- Railroad and Warehouse Commission of the State of Minnesota2
- Rinker, Andrew2
- Runkel, A.C2
- Sardeson, Frederik W.2
- Setterson, Dale R.2
- Sewall, Joseph S. (1827-1917)2
- Simerl, R. A.2