United States. Children's Bureau , Lundberg, Emma O. (Emma Octavia), 1881-1954 and Milburn, Mary Eleanor. Child Dependency in the District of Columbia : An Interpretation of Data Concerning Dependent Children Under the Care of Public and Private Agencies, Bureau Publication No. 140 , Washington, D.C: Government Printing Office, 1924, https://fraser.stlouisfed.org/title/8420, accessed on December 11, 2025.