The Eigenmann mss., 1851-1971, consists of the papers of Carl H. Eigenmann, 1863-1927, ichthyologist, and his wife, Rosa Smith Eigenmann, 1858-1947, ichthyologist.
The Muller mss., 1910-1967, consists of the papers of Hermann Joseph Muller, 1890-1967, geneticist and Nobel prize laureate, including correspondence; writings and reprints; research and data from his work as well as from his students and colleagues; materials related to conferences; and work with various professional organizations.