Typescript (in looseleaf binder labeled "Pursuit of No-See-Ums, March-April-May 1977"), with drawings and color photographs of suction plate tests related to slit jet sound production, Box: 9, Folder: 24. Russell Randolph Hays papers, RH MS 564. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/278257 Accessed November 23, 2024.