Dippie, Brian W. (1982). The Vanishing American: White Attitudes and U.S. Indian Policy. Middleton, CT: Wesleyan University Press. p. ??. ISBN0-8195-5056-6. The data yielded by this census provided strong evidence that the United States' policies towards Native Americans had had a significant impact on the enumeration of the census in the second half of the 19th century. US domestic policy combined with wars, genocide, famine, disease, a declining birthrate, and exogamy (with the children of biracial families declaring themselves to be white rather than Indian) accounted for the decrease in the enumeration of the census. Chalk, Frank; Jonassohn, Kurt (1990). The History and Sociology of Genocide: Analyses and Case Studies. New Haven: Yale University Press. ISBN0-300-04446-1.
Report of the Commissioner of Labor In Charge of The Eleventh Census to the Secretary of the Interior for the Fiscal Year Ending June 30, 1895. Washington, DC: United States Government Publishing Office. July 29, 1895. hdl:2027/osu.32435067619882. OCLC867910652. p. 9: "You may confidently look for the rapid reduction of the force of this office after the 1st of October, and the entire cessation of clerical work during the present calendar year. ... The condition of the work of the Census Division and the condition of the final reports show clearly that the work of the Eleventh Census will be completed at least two years earlier than was the work of the Tenth Census." — Carroll D. Wright, Commissioner of Labor in Charge
Report of the Commissioner of Labor In Charge of The Eleventh Census to the Secretary of the Interior for the Fiscal Year Ending June 30, 1895. Washington, DC: United States Government Publishing Office. July 29, 1895. hdl:2027/osu.32435067619882. OCLC867910652. p. 9: "You may confidently look for the rapid reduction of the force of this office after the 1st of October, and the entire cessation of clerical work during the present calendar year. ... The condition of the work of the Census Division and the condition of the final reports show clearly that the work of the Eleventh Census will be completed at least two years earlier than was the work of the Tenth Census." — Carroll D. Wright, Commissioner of Labor in Charge