Typescript concerning resonator tube testing in looseleaf binder labeled "Misc, 1962-'64," with drawings, also black and white and color photographs, Box: 8, Folder: 21. Russell Randolph Hays papers, RH MS 564. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/278229 Accessed November 23, 2024.