This primary source comes from the Records of the Children's Bureau.
Full Citation: Big Brothers and Sisters Memorandum Regarding the International Advisory Council; 8/15/1919; 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/big-brothers-and-sisters-memo, May 10, 2024]