Shares Certificates, Tonopah-Aspen Mining Company (certificate booklet), April 1903 - November 1929, RH MS AK11, Volume: 1. Business Records of William Hinckle Smith, RH MS P921. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/248443 Accessed May 18, 2024.