Ramp, Eugene, ESA Sponsor Plan, 4245-2, April 12, 1985, Box: 62, Folder: 49. University of Kansas Schiefelbusch Institute for Life Span Studies records, RG 35. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/455470 Accessed July 17, 2025.