Tuol Sleng Genocide Museum

Featured in the film, this museum sits on the site of the infamous S-21 prison. Its collection consists of records and photographs of the more than 17,000 people imprisoned, tortured, and killed by the Khmer Rouge from 1975-1979.

Yale University Cambodian Genocide Program

This project of the Genocide Studies Program at Yale University's MacMillan Center for International and Area Studies is dedicated to examining what lead to the murder of more 1.7 million people under Pol Pot's regime. The program has compiled and published 22,000 biographic and bibliographic records and over 6,000 photographs, and more recently has created an interactive Cambodian Geographic Database that includes details about prisons and grave sites throughout the country.

The USC Shoah Foundation Institute for Visual History and Education

Known for its archive of nearly 52,000 videotaped testimonies from WWII Holocaust survivors and other witnesses, the USC Shoah Foundation Institute offers educational services that reach educators, students, and the general public around the work. In fact, in early 2009, staffers from the Documentation Center of Cambodia spent three months learning about the Institute's methods for collecting, cataloging, indexing, preserving, and educating with video testimony.