Laumer - The Day Before Forever (1972), The Star Treasure (1971), Retief's War (1971), The World Shuffler (1971), The Time Trap (1971), The Day Before Forever (1971), A Trace of Memory (1970), Box: 12, Folder: 27. 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/230363 Accessed November 23, 2024.