Official publications released by the U.S. Census Bureau have a report number and often list the lead author(s).
Income of Families and Persons in Washington, D.C.: 1947
Percent distribution of total money income for families and individuals, and living conditions for Washington, D.C.
Income of the Nonfarm Population: 1946
Distribution of urban and rural-nonfarm population, by total money income level or by civilian money earnings level, for the United States.
Family and Individual Money Income in the United States: 1945
Percent distribution of families and individuals, by total money income: by color of head, residence, number of earners, sex, marital status, & type of family.