Overview: Papers of mineralogist Charles Palache, his wife Helen (Markham), and their three daughters; Jeannette (Palache) Barker, a teacher; Mary (Palache) Gregory, an architect; and Alice (Palache) Jones, a banker.

Overview: Contains papers of American author Gore Vidal (1925-2012), including literary manuscripts, correspondence, political papers, legal and business records, photographs, family papers and mementors, and other material. Also includes papers of his companion, Howard Austen (1929-2003).