Encyclopedia of Jewish and Israeli history, politics and culture, with biographies, statistics, articles and documents on topics from anti-Semitism to Zionism.| www.jewishvirtuallibrary.org
Holocaust Historical Society| www.holocausthistoricalsociety.org.uk
The Chełmno (Kulmhof) killing center was the first camp where the Nazis murdered Jewish people in gas chambers using poisonous gas. Killing operations began there in December 1941.| Holocaust Encyclopedia
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The Oyneg Shabes Archive, created by historian Emanuel Ringelblum and other Jews in the Warsaw Ghetto, meticulously documented their lives, suffering, and resistance during the Holocaust, ensuring their stories would survive even as they faced annihilation by the Nazis.| The National WWII Museum | New Orleans
The Nazis created at least 44,000 camps, including ghettos and other sites of incarceration, between 1933 and 1945. The camps served various functions, from imprisoning "enemies of the state" to serving as way stations in larger deportation schemes to murdering people in gas chambers.| The National WWII Museum | New Orleans
