More about World War I
Belgium
In Europe, the Great War killed 18 million people, left 6 million disabled, over 4 million widows and twice as much orphans.
Memorial Museum Passchendaele 1917
Germany
Der Erste Weltkrieg, Bundeszentrale für politische Bildung
Der Erste Weltkrieg, 1914 – Der Weg ins Verderben, ZDF
The Bundesarchiv’s portal on the First World War
100 Jahre Erster Weltkrieg, Deutsche Nationalbibliothek
Library of Contemporary History : First World War Portal (Bibliothek für Zeitgeschichte, BfZ)
France
Historial de la Grande Guerre (Péronne)
La Grande Guerre, il y a 100 ans
Mémoire des Hommes (Ministère de la Défense)
Musée de la Grande Guerre (Meaux)
14-18, Une Guerre Photographique
Great Britain
BBC Special on Women and World War One, BBC
Collections Search, Imperial War Museum, London
First World War Project of The National Archives
The First World War : Sources for History, National Archives & the Imperial War Museum
World War One Website of the British Library
The Netherlands
Amsterdam en de Eerste Wereldoorlog (Amsterdam and the First World War), Stadsarchief Amsterdam
Stichting studiecentrum Eerste Wereldoorlog in Nederland
USA
Digital Public Library of America (DPLA)
Prints & Photographs Online Catalogue Photo Collection, Library of Congress
Campaign Atlas to the Great War, West Point Academy, Department of History