Organization of the Papers
The collection is arranged in ten series:
- Family Papers, 1851-1978
- General Correspondence, 1887-1996
- Subject File, 1856-1988
- Writings, 1877-1985
- Supplemental File, 1765-1998
- Interviews and Recollections, 1914-1998
- Additions, 1912-1977
- Artifacts and Painting, circa 6th century BCE-1936 CE
- Closed, 1952-1956
- Oversize, 1859-1985