Confidential Memorandum re conditions on the Jicarilla Apache reservation, submitted to John Collier, Commissioner of Indian Affairs, with covering letter dated July 10, 1936. 26 pp. (xeroxed copy), July 10, 1936, Box: 125, Folder: 18. Morris Edward Opler papers, 14-25-3238. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/240827 Accessed February 19, 2026.