- Johnson, Smith & Harrison.1
- Johnson, W. H. (Draftsman)1
- Julius Bien & Co.1
- Koochiching County Abstract Co1
- L.T. Felland & Co.1
- Lipman, Louis1
- Lithy, Graham1
- Lowry, Thomas, 1843-19091
- Marschner, Francis, 1882-19661
- Marshall County Land Co. (Warren, Minn.)1
- Martin, Ralph (Delineator)1
- Matson, H. C.1
- McConnell, H. P.1
- McGill-Warner Co1
- Melgaard, H. L.1
- Miller & Boyle1
- Minn State Bank of Warren1
- Minneapolis (Minn.). City Clerk1
- Minneapolis (Minn.). City Planning Commission1
- Minneapolis (Minn.).Civic Commission.1