Sources:
Table 10. Projections of the Population by Sex, Hispanic Origin, and Race for the United States: 2015 to 2060 (NP2014-T10)
U.S. Census Bureau, Population Division (December 2014)
Historical
Census Statistics on Population Totals By Race, 1790 to 1990, and By
Hispanic Origin, 1970 to 1990, For The United States, Regions,
Divisions, and States
U.S. Census Bureau, Population Division (Feburary 2005)
Historical Statistics of the United States, Colonial Times to 1970, Bicentennial Edition, Part 2, Series Z 1–19.
Chapter Z: Colonial and Pre-Federal Statistics.
U.S. Census Bureau (September 1975)
World Population Prospects, The 2017 Revision,
Key Findings and Advance Tables. Working Paper No. ESA/P/WP/248.
United Nations, Population Division, Department of Economic and Social Affairs (2017)