- Matthews-Northrup Works (Buffalo, N.Y)2
- McGill-Warner Co (St. Paul, Minn), 19212
- McGill-Warner Co (St. Paul, Minn), 19232
- McGill-Warner Co. (Saint Paul, Minnesota)2
- McGill-Warner Co. (St. Paul, Minn.), 19222
- Milwaukee Litho. & Engr. Co. (Milwaukee, Wis.)2
- Minnesota Map Publishing Co. (Saint Paul, Minnesota), 19142
- Minnesota Transfer Board of Trade, (Minnesota)2
- Mississippi River Commission (Washington, D.C)2
- National Highways Association (Washington, D.C.)2
- National Highways Association (Washington, D.C.), 19152
- Natural Resources Intelligence Service (Ottawä)2
- Norris Peters Co (Washington, D.C)2
- Office of Village Engineer (Hibbing, Minn)2
- Office of the Chief of Engineers U.S.A (Washington?)2
- Office of the Chief of Engineers, War Dept (Washington, D.C.?)2
- Office of the Supt. Grand Trunk Road (Allahabad)2
- Office of the Supt. Grand Trunk Road; Allahabad2
- Ordnance Survey (London)2
- Oregon State Highway Commission (Salem, Or)2