United States. Children's Bureau , Rude, Anna Elizabeth , Crowder, Grace Meigs, 1881-1925 and Legg, Caroline E., 1887-1971. Physical Status of Preschool Children : Gary, Ind., Bureau Publication No. 111 , Washington, D.C: Government Printing Office, 1922, https://fraser.stlouisfed.org/title/8393, accessed on October 4, 2024.