Books by Herman R. Friis:
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Friis, Herman R. (Herman Ralph), 1905-1989: A Series of Population Maps of the Colonies and the United States, 1625-1790 (American Geographical Society mimeographed publication #3; 1940) (page images at HathiTrust; one folded map may be unavailable)
Additional books by Herman R. Friis in the extended shelves:
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Friis, Herman R. (Herman Ralph), 1905-1989: Federal exploration of the American West before 1880 (Washington, 1963), also by National Archives (U.S.) and Suzanne Pitzer (page images at HathiTrust)- Friis, Herman R. (Herman Ralph), 1905-1989: United States scientific geographical exploration of the Pacific Basin, 1783-1899. (National Archives, National Archives and Records Service, General Services Administration, 1961), also by United States. National Archives and Hawaii) Pacific Science Congress (10th : 1961 : Honolulu (page images at HathiTrust)
Find more by Herman R. Friis at your library, or elsewhere.