United States. Children's Bureau
, Woodbury, Robert Morse, 1889-
, Merritt, Ella A. (Ella Arvilla)
and Woodbury Sumner, Helen L., 1876-1933.
The Working Children of Boston : A Study of Child Labor Under a Modern System of Legal Regulation, Bureau Publication No. 89 ,
Washington, D.C:
Government Printing Office,
1922, https://fraser.stlouisfed.org/title/8375,
accessed on February 13, 2026.