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 connection 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 John Robertson Hawke: World War I letters and artifacts has been created by the University of Wollongong. John Robertson Hawke (1890-1965) was a Scottish immigrant. He worked as a warehouseman before joining in 1915 the Australian Army. He fought in Egypt, France and Belgium (Ypres). He performed in particular communication tasks as a signaller. The collection contains two postcards and 200 letters, mainly written to his parents and family, a pay book and a field medical card. There is a collection guide (collection D55; PDF).
In a second collection you will find letters, postcards, documents and objects from and about another Australian soldier, William George Abate who was killed in action in 1917.
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 virtual exhibition 100 Jahre Erster Weltkrieg [100 Years First World War] has been created in 2014 by the Österreichisches Staatsarchiv in Vienna. You can search among 24 thematic collections which cover many aspects of the First World War and its immediate aftermath. You can look at a chronology for military and diplomatic events, at milestones in daily life and documents related to them, or compare the diary entries of Karl Schneller, an influential officer in the Austrian army staff (Armeeoberkommando (AOK)), and emperor Franz Joseph for a specific date. The exhibition can only be viewed in German.
The portal The Battle of Jutland Centenary Initiative has been created to commemorate in 2016 the naval battle of May 31-June 1, 1916 between the British Royal Navy and the German Hochseeflotte off the Danish coast. At its center are a 25 minute animation video showing the actual battle, its background and impact, and the new study by Nick Jellicoe, grandson of the British naval commander admiral Jellicoe. The portal has databases on the ships and their crews. There are maps, teaching materials and sources, and a detailed web directory for the naval history of the First World War. In a crowdsourcing project the public is asked to help decipher and translate fragile German books dealing with the Battle of Jutland printed with the Fraktur type. The website can only be viewed in English.
The digital collection First World War Volunteers British Red Cross has been created in 2016 by the British Red Cross with the help of the general public. The database contains the records of some 90,000 volunteers who served in the United Kingdom and on the European continent. You can search the database for individuals using their forenames, last names, locations and hospitals, duties and/or roles. There are special pages for famous volunteers. Some aspects of the work volunteers did are highlighted, too, for example sending food parcels to British prisoners of war. You can contribute to the database with new or corrected information. The interface of this database is English.
The digital collection World War I Postcards from the Bowman Gray Collection has been created by the library of the University of North Carolina at Chapel Hill. The collection contains some 6,400 postcards from the main belligerent countries (United Kingdom, France, Germany, Belgium, Russia and Italy), but also from other countries. The sheer number of postcards in this collection is equivalent to the number of interesting subjects, for example cavalry or children. Some commercial series, too, are completely present. You can browse the collection in its entirety (530 records with often multiple items), choose among the subjects, names and places, or use the free text search. The general introduction to this collection gives also a succinct bibliography on the subject of First World War postcards.
The digital version of the Kriegstagebuch Fritz Schilling 1914-1918 has been created by his granddaughter Kerstin Schilling. During the First World War Fritz Rudolf Schilling (1891-1942) served with the Berlin Corps Fernsprechabteilung, a communication unit of the German Army, both at the Russian front and in France. The diary with mostly brief entries is published in blog fashion, interestingly one month in each post. Some photographs and maps have been added to the entries. This diary can be viewed only in German.
The digital collection Stereoscopic images of World War I has been created by Yale University Library. The stereoscopic photographs and some 200 other photographs are part of the Darrot papers (Yale University Library, MS 591). Paul Jean Gaston Darrot (1892-1958) served with the French infantry, the artillery and the communication service of the engineers; most of the pictures stem probably from this period. The images were mainly taken in France, some after the First World War. A blog post from 2013 by Andrew Berger (Manuscripts and Archives Department, Yale University Library) provides some background to this digital collection. You can only see the original double images, there is not an animated version or a red-cyan 3D version. There is also an online finding aid for the photographs in the Darrot papers.
The digital collection Die Julikrise 1914 has been created by the Politisches Archiv of the Auswärtiges Amt in Berlin, the German Foreign Office. In the twenties Max Graf Montgelas and Walter Schücking edited diplomatic documents relating to the July crisis in the “Kautsky-Edition” (Die deutsche Dokumenten zum Kriegsausbruch, first edition, 4 vol., Charlottenburg 1919; second enlarged edition, 1927). In this digital collection you can find the original documents from June 15 until August 6, 1914, often with clear indications of changes between concept(s) and the final version. There is also a link to a digital version of the 1919 edition. The documents are accompanied by introductions to their background and use. The collection is only accessible in German.
Among the Karl Kautsky Papers held at the International Institute for Social History in Amsterdam is a handwritten document relating to the 1919 edition of documents concerning the July crisis (A 85).