International Military Tribunal. Yale Law School Avalon Project. This site also has transcripts for other trials carried out by the Office of Military Government, United States (OMGUS), including the Doctors’ Trial and the Einsatzgruppen Trial.
This site also has transcripts for the Eichmann Trial.
Records at the Andover-Harvard Theological Library.
Documents and photos in their original language (mostly German).
German war letters.
Also available in print.
From the King's University College Library.
Microfiche and text.
1939-1945, Volume II, Hitler's Europe.
Print, 1937 to 1988; online, 1941 to 1988.
Print, 1922 to present; online, 1922 to present.
Print, 1922 to 1970; online, 1944 to present.
Print, 1925 to present; online, 1925 to present.
Print, 1890 to present; online, 1890 to present.
Print, 1907/08 to 2003; online, 1906 to present.
Microfiche, 1923 to 1942; microfilm, 1943 to 2012/13 and print (incomplete), 1940 to present.