Shaft No. 1, Hailey-Ola Coal Company, Haileyville [Indian Territory]

Shaft No. 1, Hailey-Ola Coal Company, Haileyville [Indian Territory], Box: 1, Folder: 65. Daniel B. Dyer collection, RH MS P21. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/486795 Accessed December 25, 2025.