"Do We Owe the Future Anything?", Law and the Ecological Challenge (AMINTAPHIL II), Buffalo, William S. Hein and Co, pp. 180-190, 1978, Box: 13, Folder: 33. Personal papers of Richard T. De George, PP 531. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/315366 Accessed June 22, 2025.