The Voice of Carelton Alumni(1957).
Miscellaneous personal papers [v.d.].
Operations Analysis in World War II (1947)--report.
Correspondence [v.d.].
National Research Fellow (1927)--notebook.
Articles and clippings [v.d., v.p.].
Photographs.
International Cooperation in Geographical Research & the Air Force Role in Geophysics (August 1967)--report.
The Aeronomy Story.
Oral history transcript (April 1978).
Speeches.
Awards and citations.
International Geophysical Year (1957-1958) [n.d.].
Subcommittee on Independent Offices--House of Representatives--statement to [n.d.].
Union Geodesique et Geophysique International Association de Meterologie (1948)--program with English and French text.
Office of Aerospace Research--U.S. Air Force (1968).
Early Days in Baltimore--Chapter 1.
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).