The Holocaust History Project (THHP) is a non-profit corporation based in San Antonio, Texas. Its website offers a comprehensive archive of documents, recordings, photographs, and essays regarding the Holocaust, Holocaust denial and antisemitism. The project became known for its refutation of the Leuchter report and the Rudolf report.
THHP defines itself an organization of "concerned individuals working together to educate and inform about the Holocaust". Some of the members remain anonymous, its director is Harry Mazal. (may he rest in peace.)
Among the material presented there are essays about scientific and legal analyses, events and people, expert witness testimony, original Nazi documents, transcripts of many of the Nuremberg trials, and the complete texts of two influential works, Jean-Claude Pressac's "Auschwitz: Technique and Operation of the Gas Chambers" and Robert Jay Lifton's "The Nazi Doctors." There are also extensive sections on the Auschwitz and Operation Reinhard extermination camps.
Over twenty-three "short essays" address a variety of questions of interest, including an extensive bibliography of Holocaust related topics. There is also a section devoted to Holocaust denial, including direct debunking of deniers such as David Irving, Ernst Zundel and several others.
Additionally, THHP volunteers answer emails from thousands of students each year.