The digital collection Feldpost aus dem Ersten Weltkrieg [Letters from the front during the First World War] has been created by the Museumsstiftung Post und Telekommunikation (MFK) as a part of their online letter collections (Briefsammlungen). This collection contains some 700 letters written by soldiers during the First World War, a selection from the holdings kept at the Museum für Kommunikation Berlin, a branch of the MFK. Letters were subject to censorship, but nevertheless they formed a vital connects between the fronts and the home front. You can search the collection by themes, geography and sets (Konvolute), filter by dates (Zeitraum) or enter search terms in the free text search field. The online collection gives you transcripts of the letters. They can be read in connection with the volume Schreiben im Krieg / Schreiben vom Krieg [Writing in wartime, writing about war]. The collection can only be viewed in German.
The digital collection Affiches de guerre [War posters] has been created in 2015 at the university library of the Université de Montreal and is now shown in its Calypso digital library. This collection contains nearly 3,500 posters from both the First and the Second World War, mainly from Canada, the United States, France, Germany and the Habsburg Empire. A small number of posters comes from other countries such as Belgium, Ireland, Italy and Russia. There are 1,675 posters from the years 1914 to 1919. A number of posters is the work of renown artists. You can set filters for particular artists, themes and years. In the advanced search mode you can search more precisely, and even add search fields as you wish. The collection can be viewed in French and English.
The digital collection Éischte Weltkrich [First World War] has been created by the Université de Luxembourg, the Luxembourg Centre for Contemporary and Digital History, and the government of Luxembourg. The German army occupied Luxembourg at the start of the First World War. The website offers a chronology of events up to 1924, a number of themes for further exploration (occupation, grief and loss, hunger, the aftermath), an interactive map, and a collection with some 350 digitized items which you can filter by period and genre; you will find items from 1919, too. The section Resources contains six scholarly articles. There is also a section on education for teachers. This website can be viewed in French, German and English.
The digital collection Three Pilots – One War is the fruit of a partnership between the Militärhistorisches Museum der Bundeswehr (Berlin-Gatow), the Royal Air Force Museum (London) and the Musée de l’Air et de l’Espace in Le Bourget. You can follow the First World War through the letters of three pilots, the Frenchman Jean Chaput, the Englishman Bernard Rice – who had served earlier as a messenger – and the German Peter Falkenstein. The letters are published here in day-to-day order exactly 100 years after they were written. Historical comments accompany each letter. The three museums will organize exhibitions between 2014 and 2019 to highlight aspects of the aircraft warfare during the First World War. You can view this collection in English, French and German.
The World War I Collection: Posters has been created by the Hoover Institution at Stanford University. This digital collection contains 12,300 posters published in the United States, the United Kingdom, Germany, Poland and Russia, Italy, Austria, Canada and Hungary, to mention here only the countries with more than 100 posters in this collection. The size and variety of this collection is extraordinary. There are several filters to make a selection (e.g. country of origin, language, creator) and you can set the time period. For 1914-1918 there are some 10,600 items. The results can be viewed in a list or in a grid. It is possible to create a user account, to save your search questions and create your own collections. This collections can only be viewed with an English interface.
The digital collection World War 1914-1918 has been created by the university library of the Jagiellonski University in Cracow, Poland, as a part of its digital library. This digital collection contains 700 works. You can view the books in alphabetical order by title, search using the free text search field or using the advanced search. The collection contains works in Polish, German and other languages. Beside books there are sixty pamphlets, two atlases and a few maps and posters. The interface of this digital collection can be viewed in Polish and English.
The digital collection World War I Glass Plate Stereographs 1914-1929 has been created by Pennsylvania State University Libraries. This collection contains 368 stereoscopic photographs taken between 1914 and 1927. The photos were mainly taken in France, a few in Belgium, Germany, Italy, Macedonia and Greece. In particular the American Expeditionary Force and an afterwar meeting of the American Legion near Paris in 1927 come into view. Some of the images show most graphic injuries and soldiers killed in action. You can browse the images and filter them for year. There is also a simple free text search and an advanced search mode. For each stereograph both images are shown, without digital animation. There is a separate finding aid for this collection.