Tamara Plakins Thornton, “Mathematical Geography, the ‘Use of the Globes,’ and Race Theory in Early America,” WMQ 77, no. 2 (April 2020): 273–310.


“Geographical Distribution of the Races of Man,” in Charles Pickering, United States Exploring Expedition: During the Years 1838, 1839, 1840, 1841, 1842; Under the Command of Charles Wilkes, U.S.N., vol. 9, The Races of Man and Their Geographical Distribution (Philadelphia, 1848), map between 12 and 13. Courtesy of the Library of Congress, LC Q115.W6. A color version is available on the OI Reader, Project MUSE, and JSTOR.