Scope and Content Correspondence and papers of Marcus Lyon; notes on protozoology, 1916; manuscripts of Marcus and Martha Lyon; medical case studies of Martha Lyon; newsletters of the Society of American Bacteriologists, 1938-1939; a scrapbook of Martha Brewer, 1887-1902 (before she married Marcus Lyon); and printed matter. Marcus Lyon's papers are of three main types: 1. Letters, mostly on mammalogical and botanical subjects, including various letters he received from the...