The Voice of Carelton Alumni (1957).
Miscellaneous personal papers []. v.d.
Operations Analysis in World War II --report. (1947)
Correspondence []. v.d.
National Research Fellow --notebook. (1927)
Articles and clippings [, v.p.]. v.d.
Photographs.
Speeches.
Awards and citations.
Subcommittee on Independent Offices--House of Representatives--statement to [n.d.].
Union Geodesique et Geophysique International Association de Meterologie --program with English and French text. (1948)
Office of Aerospace Research--U.S. Air Force (1968).
Institute of Geophysics and Planetary Sciences, UCLA [n.d.].
Favorite Professor of UCLA Class of 1942--plaque.
National Academy of Sciences of the United States of America--award [1957].
Photographs.
Birthday note from Pol Swings (International Astronomical Union) [n.d.].
Research Fellow Board--National Research Council--certificate of award (1927).