Martin, Geoffrey J., "In Memoriam: Richard Hartshorne, 1899-1992", Annals of the Association of American Geographers, Vol. 84, No. 3 (Sep., 1994), pp. 480-492, JSTOR
nytimes.com
query.nytimes.com
New York Times Obituary, "Richard Hartshorne; Geographer Was 92", November 10, 1992, Eprint
web.archive.org
McMaster, Robert and McMaster, Susanna, "A History of Twentieth-Century American Academic Cartography" in Cartography and Geographic Information Science, v.29, n. 3, July, 2002, American Congress on Surveying and Mapping, Gaithersburg, MD. U of Wisconsin PDF EprintDiarsipkan 2006-10-20 di Wayback Machine.
wisc.edu
geography.wisc.edu
McMaster, Robert and McMaster, Susanna, "A History of Twentieth-Century American Academic Cartography" in Cartography and Geographic Information Science, v.29, n. 3, July, 2002, American Congress on Surveying and Mapping, Gaithersburg, MD. U of Wisconsin PDF EprintDiarsipkan 2006-10-20 di Wayback Machine.