1994 Why the Second Codex Selden was Painted. In Caciques and their People: A Volume in Honor of Ronald Spores, edited by Joyce Marcus and Judith Zeitlin, pages 111-142. Ann Arbor: Anthropological Papers, Museum of Anthropology, University of Michigan, No. 89. [Discussion of the social and political context in which the Codex Selden was re/painted].

Spinden, Herbert J.
 1933 Indian Manuscripts of Southern Mexico. In Annual Report of the Smithsonian Institution, 1933, pp. 429-451. Washington D.C.: Smithsonian Institution. [Early overview of Mixtec writing; discusses the Lady 6 Monkey narrative on pages 6-9 of the Codex Selden].