United States. Children's Bureau
, United States. Council of National Defense. Committee on Women's Defense Work. Department of Child Welfare
and National Recreation Association.
Patriotic Play Week : Suggestions to Local Child-Welfare Committees, Children's Year Leaflet No. 4, Bureau Publication No. 44 ,
Washington, D.C:
Government Printing Office,
1918, https://fraser.stlouisfed.org/title/8334,
accessed on July 10, 2026.