- Nicollet, J. N. (Joseph Nicolas), 1786-18431
- Parvin, Theodore Sutton, 1817-1901.1
- Poore, Orson B.1
- Porter, Florence Ireland1
- Proudfoot, Bird, & Lawson, Architects1
- Ragsdale & Chassell (Firm)1
- Raney, J. H.1
- Rauscher, Willis F.1
- Rutledge, Wiley, 1894-19491
- Sinn, Eugene1
- Smith, Roswell Chamberlain, 1797-1875.1
- Strum, G. P. (Gustave P.)1
- Successful Farming Publishing Co.1
- Tanner, Henry Schenck, 1786-1858.1
- Tester, Allen C. (Allen Crawford), 1897-1
- Theo. W. Ohman Map Co.1
- Union Pacific Railroad Company.1
- United States. Bureau of Public Roads1
- United States. Post Office Department1
- United States. Public Roads Administration.1