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- Lusardi, Barbara A3
- Lynch, F. C. C. (Francis Christopher Chisholm), 1884-3
- Machamer, J.F.3
- Maryland Geological Survey3
- Matthews-Northrup Company3
- Matthews-Northrup Works3
- Meyer, G.N3
- Minnesota Transfer Board of Trade.3
- Minnesota. Division of Game and Fish3
- Mùˆnster, Sebastian, 1489-15523
- Nathan, H.D. (Geologist)3
- National Geographic Society (U.S.). Map Department3
- Nicholson, W. L.3
- Ortelius, Abraham, 1527-15983
- Palen, Barbara M.3
- Peterson, Todd A.3
- R.L. Polk & Co.3
- Rapkin, J.3
- Renshawe, J. H. (John Henry), 1852-3