Bound typescript (cover title: "Hays Hydraulic Drilling Co, File No. 6. Title: "Hose Turner") with drawings and black and white photographs. Bound and notarized December 31, 1948, Box: 7, Folder: 16. Russell Randolph Hays papers, RH MS 564. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/278205 Accessed November 23, 2024.