David Rumsey
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52. Center Negro population 1880-1900.
2152.052
pilot4
Sketch map showing the position of the center of the Negro population and the median point in 1880, 1890 and 1900. Compiled by Henry Gannett, Geographer. (United States Census Office, 1903). Julius Bien & Co., N.Y.
1903
Gannett, Henry, 1846-1914
U.S. Census Office
19 × 26 cm
1 : 790000