Biographical Note/Scope and Content
| Series 1.1 | General Correspondence, Outgoing, 1922-1982 |
| Series 1.2 | General Correspondence, Incoming, 1917-1983 |
| Series 2 | Diaries, 1911, 1926, 1936-1982 |
| Series 3 | Subject Files, 1911-1980 |
| Series 4 | Granger Homesteads Project Files, 1926-1940, 1945, undated |
| Series 5 | Malta Investigation Files, 1968-1973, 1975 |
| Series 6 | Manuscripts, Published Articles and Letters to the Editor, and Speeches, 1909-1975, undated |
| Series 7 | Travel Letters, 1945-1957, 1965 |
| Series 8 | Photographs, 1914-1980 |
| Series 9 | Oral History Recordings and Transcripts, 1970-1974, undated |
| Series 10 | Writings about Ligutti, 1935-1985, undated |