"The Territories of the Apache Groups of the American Southwest." (Typescript in 3 parts): Part I: Before American Occupation (23pp.) Part II: At and Immediately After American Occupation (26 pp.) Part III: The Evidence of Modern Investigation (59 pp.) (Report prepared for use in Indian claims.) Unpublished., 1907-1940

"The Territories of the Apache Groups of the American Southwest." (Typescript in 3 parts): Part I: Before American Occupation (23pp.) Part II: At and Immediately After American Occupation (26 pp.) Part III: The Evidence of Modern Investigation (59 pp.) (Report prepared for use in Indian claims.) Unpublished., 1907-1940, Box: 125, Folder: 9. Morris Edward Opler papers, 14-25-3238. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/240818 Accessed February 09, 2026.