- Marshall County Land Co. (Warren, Minn.) (1)
- Martin, R. E (1)
- Matson, H. C. (1)
- Melgaard, H. L. (1)
- Minn State Bank of Warren (1)
- Minnesota Geological Survey (1)
- Minnesota Geological Survey. (1)
- Nelson, C. A. (1)
- Northern Oil Company (1)
- O'Hara and Zeese Civil engineers and Surveyors (1)
- Ogaard, Louis A. (1)
- Pearl, Holman I (1)
- Phillips Petroleum Company (1)
- Quist, Irving E (1)
- Register Print (Warren, Minn.) (1)
- Reishus, E. S. (1)
- Reishus-Remer Land Co. (1)
- Remer E. N. (1)
- Rivers, John P. (1)
- Shedd-Brown Manufacturing Company (Minneapolis, Minn.) (1)