Letters. 1937-1987.
Letters about first season. 1937-1939.
Letters about Base Camp. 1939-1942.
Letters about Base Camp-summer. 1939-1942.
Letters about war years. 1941-1945.
Letters about Expedition years. 1946-1957.
Letters about Family ascents. 1958-1966.
Letters about later ascents. 1967-1976, 1978, 1985, 1987.
Writings by Ruth Mendenhall and John Mendenhall. 1940s-1980s.
Writings by Ruth Mendenhall and John Mendenhall. 1940s-1980s.
Writings about Ruth Mendenhall. 1950s-1980s.
News clippings. 1959, 1962, 1964, 1967.
Photographs and ephemera. 1930s-2004.
Ruth Mendenhall scrapbook (about mountaineering). ca. late-1930s-ca. 1940s.
Mountain photographs. undated.
Clippings regarding mountaineering. 1959, 1963.
Sierra Club Angeles Chapter informational booklet. 1959 Oct-Jan 1960.