A slip of paper calculating how many rds [sic] each person must dig each day to receive 50 dollars; signed W.S. Coverston, Box: 1, Folder: 8, item: 8. W.S. Coverston letters, RH MS 1356. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/171488 Accessed June 02, 2024.