Treat - Correspondence and royalty (1976-[19]82), James Tiptree - correspondence and royalty (1979-[19]83), Excursion Fare (1980), Box: 23, Folder: 15. Corporate Papers of the Robert Mills Literary Agency, MS 307. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/230730 Accessed May 09, 2024.