- Islandora Repository
- Text Collection
- John Archibald Wheeler Papers, 1880-2008
- I. Princeton University Correspondence and Files
- Paul Joseph Cohen - Correspondence, 1967-1973
- Paul L. Forman - Correspondence, 1973
- Peter G. Bergmann - Correspondence, 1956-1971
- Peter Putnam - Correspondence, 1954-1975
- Philip James Edwin Peebles - Correspondence, 1962-1974
- Philip Warren Anderson - Correspondence, 1963-1967
- Ralph Frederick Baierlein - Correspondence, 1961-1968
- Richard Phillips Feynman - Correspondence, 1955-1976
- Richard W. Lindquist - Correspondence, 1956-1974
- Robert Debever - Correspondence, 1968
- Robert R. Wheeler - Correspondence, 1961-1962
- Robert W. Fuller - Correspondence, 1959-[1974]