This primary source comes from the Records of the Children's Bureau.
Full Citation: Stop Wearing Out Two Million Children, by Alice Park; 1/1920; Central Files, 1912 - 1969; Records of the Children's Bureau, Record Group 102; National Archives at College Park, College Park, MD. [Online Version, https://www.docsteach.org/documents/document/wearing-out-two-million-children, April 19, 2024]