United States. Children's Bureau
and Steele, Glenn.
Care of Children in Day Nurseries : Social Statistics in Child Welfare and Related Fields—Annual Report for the Registration Area for the Year 1930, Separate from Publication No. 209 ,
Washington, D.C:
Government Printing Office,
1932, https://fraser.stlouisfed.org/title/8485,
accessed on March 25, 2026.