American Philosophical Association: Scott Lander, "A Defense of Ross's Distinction Between Prima Facie Duty and Duty Sans Phrase, All Things Considered", Ed Sherline's comments; De George's "On Harrison and Pullman"; correspondence, schedule for APA Conference in Kansas City, Missouri, 1994

American Philosophical Association: Scott Lander, "A Defense of Ross's Distinction Between Prima Facie Duty and Duty Sans Phrase, All Things Considered", Ed Sherline's comments; De George's "On Harrison and Pullman"; correspondence, schedule for APA Conference in Kansas City, Missouri, 1994, Box: 18, Folder: 1. 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/315688 Accessed March 04, 2026.