Cyrus Colter - correspondence (1970-[19]75) - Beach Umbrella (1970), Hippodrome (1966), River of Eros (1973), Box: 3, Folder: 50. 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/229636 Accessed May 21, 2024.