The Morse family papers are organized in accordance with the following series arrangement:

Series I: R.I. (Robert I.) Morse correspondence, 1878-1920

Series II: Ada C. Morse correspondence, 1920-1942

Series III: Other family correspondence, 1881-1965

Series IV: Publications and Ephemera, circa 1900-1963

Series V: Photographs, circa 1897-2005