Academic libraries and historical museums often try to digitize primary source collections held in their archives and special collections in order to make them available to the widest possible audience.
Online Collections by Area
The Holocaust and German sources
Shoah Foundation: huge archive of interviews with Holocaust survivors
U. S. Holocaust Memorial Museum search engine (lots of online items): https://collections.ushmm.org/search/
Nuremberg trials database
German History in Documents and Images (GHDI) http://germanhistorydocs.ghi-dc.org/(Links to an external site.)
(a grab-bag of different sources by period)
German primary sources from different periods: The German Propaganda Archive
U. S. sources
Veterans' History Project: Oral history interviews from wars including WWII: https://www.loc.gov/vets/
US National Archives and Records Administration has some things in digital format, although it might be hard to navigate: https://www.archives.gov/research/military/ww2/electronic-records.html
The NYT Digital Archive and the Times of London Digital Archive. Both available on our library website under “Databases A-z” on primo page.
Library of Congress WWII materials guide: https://www.loc.gov/rr/program/bib/ww2/ww2bib.html;
Rutgers Oral History Archive: Contains a huge database of oral history interviews with US veterans of WWII, with European theater specified: https://oralhistory.rutgers.edu/military-history/29-conflict-index/164-world-war-ii-european-theater-index
Foreign Relations of the United States (FRUS), a huge archive of curated State Department materials (find volume on WWII): https://uwdc.library.wisc.edu/collections/FRUS/
I Remember: a collection of personal accounts of Soviet veterans: https://iremember.ru/en/
Harvard Project on the Soviet Social System (HPSSS; also known as Harvard Interview Project): http://hcl.harvard.edu/collections/hpsss/index.html(Links to an external site.)
HPSSS is a collection of 694 transcribed interviews conducted with refugees from the USSR during the early years of the Cold War. It has recently become available as a searchable online
Books in Primo are assigned Library of Congress Subject Headings. In many ways, subject headings are a form of tagging, in that they represent the content of the material and provide ways for you to efficiently locate more materials that are conceptually related.
Library of Congress Subject Headings are also quite useful for discovering primary sources. The following subheadings usually are added to indicate that the material is a primary source: sources, personal narratives, correspondence, diaries, manuscripts, or notebooks. Once you've discovered the subject heading for secondary sources, try adding one of the primary source subheadings to see what you find. Here are some examples: