United States. Children's Bureau
and Hunter, Estelle B., 1885-1974.
Infant Mortality : Results of a Field Study in Waterbury, Conn. Based on Births in One Year, Infant Mortality Series No. 7, Bureau Publication No. 29 ,
Washington, D.C:
Government Printing Office,
1917, https://fraser.stlouisfed.org/title/8322,
accessed on October 3, 2024.