I. Princeton University Correspondence and Files
- Karel V. Kuchar - Correspondence, 1967-1979
- -- See also Series I: Pereira, Carlos Martin; Sandberg, Vernon; Scott, Dana S.
- Karl F. Herzfeld - Correspondence, 1961-1975
- Catholic University of America; Herzfeld, Regina (Mrs. Karl F.)
- Kip Stephen Thorne - Correspondence, 1963-1976, n.d.
- Braginsky, Vladimir B.; Dicke, Robert Henry; W.H. Freeman and Co, Publishers (1970-1973); Geroch, Robert Paul; Misner, Charles W. (1970-1971); Ruffini, Remo; York Graphic Services (1972). -- See also Series I: W. H. Freeman and Co, Publishers; Misner, Charles W.; Novikov, I.D.; Thompson, Kathryn. Series III: Special Relativity. Oversized
- Lawrence E. Thomas - Correspondence, 1968-1975
- Hepp, Klaus; Kaysen, Carl
- Lawrence E. Thomas - Correspondence, 1968-1975
- Hepp, Klaus; Kaysen, Carl
- Lawrence Livermore Laboratory - Correspondence, 1960, 1971-1976
- Batzel, Roger; Lawrence Radiation Laboratory. -- See also Series I: University of California, Scientific Advisory Committee for Lawrence Livermore Laboratory and Los Alamos Scientific Laboratory
- Lewis L. Strauss - Correspondence, 1965-1972
- Goheen, Robert Francis; Smyth, Henry DeWolf. -- See also Series I: Einstein Papers (1971); Oppenheimer, J. Robert; Singer, S. Fred