United States. Children's Bureau and Thompson, Laura A. (Laura Amelia), 1877-1949. Laws Relating to "Mothers' Pensions" in the United States, Denmark, and New Zealand, Legal Series No. 4, Bureau Publication No. 63 , Washington, D.C: Government Printing Office, 1919, https://fraser.stlouisfed.org/title/8351, accessed on December 21, 2025.