NASA/University Conferences of Aeronautics, Oct 1974, Drag Reduction Workshop, July 1925, Papers, 1974, undated, Box: 21/1/NASA. Records of the University of Kansas' School of Engineering, RG 21. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/519276 Accessed June 26, 2024.