- Johnson, William D., Jr.1
- Knight, Alfred L.1
- Krauskopf, Konrad B. (Konrad Bates), 1910-20031
- Langer, William H.1
- Lee, K. Y.1
- Lemmon, Robert E.1
- Leo, Gerhard W.1
- Lewis, Richard Quintin, 1919-1
- Lipson, Thomas1
- Ludman, Allan1
- Luedke, Robert George, 1927-1
- Maberry, John O., 1935-1
- Machette, Michael N.1
- Mairs Geographischer Verlag, cartographer1
- Marsh, Sherman P., 1935-1
- McDowell, Robert C., 1935-1
- Merschat, Carl E.1
- Miller, Ralph L. (Ralph LeRoy), 1909-19911
- Morris, H. T. (Hal Tryon), 1920-1
- Muller, Ernest Hathaway, 1923-1
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