Series 1. Correspondence
Correspondence 1945-1967
Scope and Content Note
Correspondence re "Millikan: Teacher and Friend," 1964-1965
Scope and Content Note
Series 2. Cosmic-Ray Studies
Correspondence 1933-1955
Scope and Content Note
Millikan, Robert A., with Victor Neher 1932, 1934-1937, 1941-1942, 1945, undated
Robert A. Millikan with other correspondents
Scope and Content Note
Cosmic-ray data and related correspondence
Scope and Content Note
Miscellaneous Robert A. Millikan material: cosmic-ray reprints, photographs, newsclippings, etc. 1916, 1919, 1928, 1931, 1934, 1936-1937, 1964, undated
Series 3. Biographical and Miscellaneous Material
Research programs--proposed undated
Slides of apparatus and expeditions 1925-1929, undated
Journals (3) Oct 1939-Mar 1940, Jul 1951-Jul 1959, Jul 1960-Oct 1983
Memories 1993-1994
Reprints
Scope and Content Note