United States. Children's Bureau and Winslow, C.-E.A. (Charles-Edward Amory), 1877-1957. The Public Health Nurse : How She Helps to Keep the Babies Well, Children's Year Leaflet No. 6, Bureau Publication No. 47 , Washington, D.C: Government Printing Office, 1918, https://fraser.stlouisfed.org/title/8337, accessed on July 31, 2026.