Please note Series and Box numbers for retrieval.
| Series 1 | United States Diplomatic Reports US Embassy, Phnom Penh Cambodia 1956-1981 |
| Series 2 | Intelligence Reports 1955-1974 |
| Series 3 | Unpublished Reports and Documents |
| Series 4 | Newspapers Clipping and Photocopies 1968-1991 |
| Series 5 | Materials from the Documentation Center of Cambodia |
| Series 6 | Photocopies of articles from Books and Magazines |
| Series 7 | Theses/Dissertations |
| Series 8 | Research Files |
| Series 9 | Published Monographs |
| Series 10 | Issues of Periodicals |
| Series 11 | Translations of S-21 (Tuol Sleng) Prison Confessions |
| Series 12 | Khmer Language S-21 (Tuol Sleng) Prison Confessions |
| Series 13 | Research Correspondence |
| Series 14 | Pictures and Photographs |
| Series 15 | Miscellaneous |