The following lists of resources are modified from The Bowling Green State University Libraries: https://libguides.bgsu.edu/HistoryInternet and https://libguides.bgsu.edu/internetprimaryUS.
World War I: Primary Sources
- 100 Jahre Erster Weltkrieg
- 1914-1918: The Great War and the Shaping of the 20th Century (PBS)
- Act of Remembrance First World War Publicity Posters at the Nova Scotia Archives
- Albert Huet's WWI Documents (French Army)
- American Leaders Speak: Recordings From World War I
- American war posters from the First World War, circa 1914-circa 1919
- Andre Jeunet Collection: A French Soldier in World War I (photos)
- Arkansas and the Great War
- Billy Hughes at War (Australia)
- British First World War Recruiting Posters
- British war posters from the First World War, circa 1914-1918
- California University of Pennsylvania WWI Collection: Letters from a Western Pennsylvania soldier
- Camp Dix News 1917: Newspaper from Fort Dix
- Camp Sevier
- Canada and the First World War
- Christmas Truce (Topics in Chronicling America)
- Dear Homefolks (Letters from Australian soldiers): Letters from Australian soldiers in WWI
- Delbert Claire Brandt Collection (letters of a soldier)
- DeWitt County World War I Collection
- Doughboy Center: The Story of the American Expeditionary Forces
- Europeana 1914-1918
- Experiencing War: World War I: The Great War
- Female Spies in World War I (Chronicling America)
- First World War (British National Archives)
- FirstWorldWar.com
- French World War I Posters
- From Columbia to the Rhine: Being a Brief History of the Fourth Engineers
- German World War I Photographic Postcards
- Great War Archive
- Guide to World War I Materials (Library of Congress)
- Hatchet: Published on the High Seas 1918-1919: A newspaper published on the USS George Washington while sailing to Europe.
- Hermann Moyse, Sr. World War I Collection
- Histoire et Memoires des Deux Guerres Mondiales
- Imperial War Museums: First World War
- Interactive WWI Timeline
- Irvin Chamberlin Henry World War I Collection
- Joseph M. Bruccoli Great War Collection
- Lafayette Escadrille: American Aviators in World War I (Topics in Chronicling America)
- Lawrence D. Yeomans Papers, 1895-1946 (bulk 1917-1919)
- Letters Home: Correspondence from the First World War (Nova Scotia)
- Memoire des Hommes: Premiere Guerre Mondiale
- Music of the First World War
- Naval-History.net
- Newspaper Pictorials: World War I Rotogravures, 1914-1919
- OAMC World War I Veterans: Surveys of WWI veterans - includes photos, news clippings, etc.
- Operation War Diary (British National Archives)
- Our Military Heritage: World War I
- Over There: Missouri and the Great War
- Photographs from the World War I Memoir of Margaret Hall (Red Cross volunteer)
- Photographs of World War I Battlefields, Captured German Installations, and Allied Installations
- Polar Bear Expedition's Digital Collection
- Ruhleben: A Picture of a World War I Internment Camp
- S.A.T.C.: Student Army Training Corps J.M.U. During the First World War
- Sinking of the Lusitania (Topics in Chronicling America)
- Soldiers of the Great War - Ohio Section Only
- Stars and Stripes: The American Soldiers' Newspaper of World War I 1918-1919
- Tanks in World War I (Topics in Chronicling America)
- Treaty of Versailles (Topics in Chronicling America)
- Trench and Camp Newspaper - Camp Upton 1917-1919: The Camp Upton (Long Island, NY) version of a newspaper published for soldiers by the National War Work Council of the YMCA
- Trenches on the Web: Posters from the Great War
- University Goes to War: World War I Women
- War Diaries of the First World War (Canadian)
- War Poster Collection (University of Washington)
- Witness to War Dec 1919-Aug 1922: Ireland at War
- Women, War, and the Home Front
- World War History: Newspaper Clippings 1914 to 1926: Daily records and comments as appeared in American and international newspapers
- World War I & World War II Propaganda Posters (Brandeis University)
- World War I -- Documents (Illinois Digital Archives)
- World War I British Press Photograph Collection
- World War I Centennial: Commemorating the Great War
- World War I Collection (Arkansas State Archives)
- World War I Collection (North Carolina Digital Collections)
- World War I Declarations (Topics in Chronicling America)
- World War I Diaries and Letters (University of Iowa)
- World War I Document Archive
- World War I Glass Plate Stereographs, 1914-1929
- World War I History Commission Questionnaires Database (Virginia): Searchable database of questionnaires filled out by WWI veterans.
- World War I in Pictures: An Overview of Prints & Photographs Division Collections (Library of Congress)
- World War I Internment Camps (Australia)
- World War I Maps (North Carolina Digital Collections)
- World War I Photograph Albums and Postcards (New York Public Library)
- World War I Postcards from the Bowman Gray Collection
- World War I Posters (Ball State University)
- World War I Posters (Library of Congress)
- World War I Scrapbook of German Soldiers July 1915-May 1919
- World War One (BBC)
- World War One (British Library)
- World War Poster Collection (University of North Texas)
- WWI & WWII Posters (University of British Columbia)
- WWI Detainees in Hot Springs, NC
- WWI Pamphlets 1913-1920
