"The Use of Peyote by the Carrizo and Lipan Apache Tribes," American Anthropologist, 40, No.2, 271-285., 1938

"The Use of Peyote by the Carrizo and Lipan Apache Tribes," American Anthropologist, 40, No.2, 271-285., 1938, Box: 123, Folder: 18. Morris Edward Opler papers, 14-25-3238. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/240673 Accessed October 29, 2025.