United States. Children's Bureau. The Promotion of the Welfare and Hygiene of Maternity and Infancy : The Administration of the Act of Congress of November 23, 1921, Fiscal Year Ended June 30, 1926, Bureau Publication No. 178 , Washington, D.C: Government Printing Office, 1927, https://fraser.stlouisfed.org/title/8457, accessed on July 12, 2026.