Official publications released by the U.S. Census Bureau have a report number and often list the lead author(s).
Voter Participation in the National Election November 1964
An estimated 69 percent of the civilian noninstitutional population of voting age said they voted in the November 1964 national election.
Income in 1964 of Families and Persons in the United States
Distribution of families and unrelated individuals by total money income, by color, type of family, age, size of family, number of earners, and type of income.
1960 Census: Per Capita and Median Family Income in 1959
Mississippi ranked lowest in per capita ($967) and median family income ($2,884). Nevada was highest per capita ($2,356). Alaska was highest median ($7,305).
Income of the Elderly in 1963
Income in 1963 and 1960, for families with head 65 years old and over, and with head under 65, by selected social and economic characteristics.
Low-Income Families & Unrelated Individuals in the United States: 1963
Data from the March 1964 survey showing families and unrelated individuals with incomes under $3,000 by social and economic characteristics.
Average Family Income Up 5 Percent in 1964 (Advance data)
Advance data from the March 1965 sample survey, showing families and unrelated individuals by total money income in 1964, by selected characteristics.