- World War I: Trenches on the Web
- Online history of World War I featuring a range of reference materials as well as images, discussion forum, and links. - First World War.com
- Dedicated to the history of the First World War. Includes the Western Front today, timeline, battles, chemical warfare, photographs, diaries, and biographies. - First World War Encyclopedia
- Created by teachers and students from several different countries. - Trenches on the Web: Map Room
- Includes maps of all the theatres of operations. - Navies of World War 1
- Includes timelines arranged by theatre. - Heritage of the Great War
- Articles, pictures, posters and paintings on what happened after the First World War. Also in Dutch. - Great War, The
- Art, writings, and information about WWI. - Propaganda Postcards of the Great War
- Features a collection of war-themed postal cards produced during World War I. - First Call: American Posters of World War One
- Illustrated exhibit catalogue. - Art of the First World War
- Paintings from international collections commemorate the 80th anniversary of the end of the First World War. - Women in World War One
- Chronicles the history of women who served in WWI. - Great War: 80 years on
- BBC News Online looks back at what became known as "the war to end all wars". - World War I Document Archive
- Collection of material relating to the Great War including official documents and treaties, diaries and memoirs, timelines, and photos. - World War I Political Cartoons
 - Versailles Treaty (1919) (5)
- Lusitania@
- Great War and the Shaping of the 20th Century
- PBS series about World War I. Features interviews, maps, photographs and an interactive timeline. - Christmas Truce of 1914 (6)
- The Great War
- From The War Times Journal. - 1918 Influenza Pandemic@
- Zimmerman Telegram (1)
- British Posters of World War I
- Illustrated catalogue of an exhibition of 25 British posters from the Roger N. Mohovich collection at Georgetown University Library. - U.S. Army Official War Artists
- Profiles of the eight World War I artists, plus a look at how their work was carried out and how it was received back home. - Relevance
- Quarterly journal of The Great War Society. - First World War and Comedy
- A study of the types of comedy produced by WWI. - Brest-Litovsk Treaty (1918) (3)
- Morris Chaim Blake Memorial
- A memorial to a soldier of the Jewish Legion in the 39th Royal Fusiliers during WWI. - World War 1 Archive
- With sections on the causes, the fronts and campaigns and Armistice Day. - World War One Art and Artists
- Annotated directory of sites dedicated to the art and artists of World War I. - 1914-1918: War in Sepia
- Collection of sepia-tone photographs originally owned by French serviceman Jean Marie Jourdain. Includes biography of Jourdain and a history of the 93rd Infantry Regiment. - World War I Merchant Marine Training
- The history of the U.S. Merchant Marine training programme during World War I, including photos and recruitment posters. - The Great War, 1914-1918
- Chronology, major battles, and pictures.
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