"Caldwell, Anne (1876–1936)," Women in World History: A Biographical Encyclopedia (Caldwell is in Vol. 3 of 17), Anne Commire (ed.), Deborah Klezmer (assoc. ed.), Gale (2000); OCLC612101625, 41108563
"Caldwell, Anne (1876–1936)," Women in World History: A Biographical Encyclopedia (Caldwell is in Vol. 3 of 17), Anne Commire (ed.), Deborah Klezmer (assoc. ed.), Gale (2000); OCLC612101625, 41108563