"Struggles of the Thompson Creek Pioneers," Ellsworth, Kansas, by Luther R. Johnson, Box: 2, Folder: 10. Typescript of "Our Campbell Legacy," by Kathleen Boston Fox, together with family letters and personal accounts of Luther R. Johnson, RH MS 493. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/51034 Accessed May 03, 2024.