00929cam a22002531 4500 l 33000117 DLC 20260227111534.0 820626s1933 xx a 000 0 eng l 33000117 (OCoLC)14735342 DLC DNLM OCoLC DLC premarc HV741 .A32 no. 220 W1 UN6181 no.220 1933 United States. Children's Bureau. Mothers' aid, 1931 ... Washington, U.S. Govt. print. off., 1933. v, 39 p. ill. Bureau publication no. 220 At head of title: United States Department of labor. Frances Perkins, secretary. Children's bureau. Grace Abbott, chief. "A similar survey was made by the Children's bureau in 1921 and 1922." - Letter of transmittal. United States. Children's Bureau. Publication ; no. 220. 36104 36104