Fonds consists of correspondence of Agnes Coates, 1891-1943; addresses and diaries of Agnes Coates, 1886-1887, 1935; annotated copy of Agnes Coates' book, "The Sure Road to Health; or "What Can Be Learned From The Nutrition Laboratory"; correspondence, diaries and addresses of Harper H. Coates, 1892-1913; family correspondence, 1910-1977; biographical and genealogical notes; three boxes of unsorted notes of Willson Coates for planned biography; 2 scrapbooks and 103 photographs.