Van Dyke, Annette (1992). "An Introduction to Wynema, A Child of the Forest, by Sophia Alice Callahan". Studies in American Indian Literature. Series 2. 4 (2/3): 123–128. JSTOR20736606.
okhistory.org
Wilson, Linda D. (2009). "Callahan, Sophia Alice (1868–1894)". Oklahoma City, Oklahoma: Oklahoma Historical Society. Retrieved 23 September 2015.