The Martin Sponholz Papers, dated 1965-1968, are photographic slides of pictures Martin Sponholz took while he was a member of Operation Deepfreeze-66 Expedition and the Japanese Antarctic Research Expedition. Sponholz numbered and wrote captions beneath the slides. Those numbers and captions are used in the inventory list as titles. The slides marked DF relate to the United States Antarctic Research Program’s Deepfreeze-66 Expedition at Plateau Station, dating 1965-1966. The photographs Sponholz took on this expedition feature the building of the Plateau Station and its facilities, tools and instruments used to measure wind and temperature, and Antarctica’s landscape. The slides marked J relate to the photographs Sponholz took on Japanese Antarctic Research Expedition, dating 1967-1968. The photographs Sponholz took on this expedition feature meteorology equipment, Antarctica’s landscape and animals, and Syowa Base.

The Charles Passel Papers, dated 1937-1953, 1971-2004, and 2012, contains notes, correspondence, photograph slides, and black and white photographs from Passel’s time with the United States Antarctic Service Expedition (1939-1941). Journal articles written by geologists and polar scientists, and a copy of the research paper Passel wrote with Paul Siple, another scientist on United States Antarctic Service Expedition, are also included in this collection. This collection also contains VHS videocassettes recordings of speaking engagements where Passel spoke about his experiences in Antarctica, as well as an oral history interview on audiocassette where he discussed his time on the United States Antarctic Service Expedition. The original VHS videocassettes were created between 1996 and 2004. DVD copies of the VHS videocassettes were created in 2012.