The International Institute of Social History (IISH) in Amsterdam has created on its website a research guide for the First World War. It presents some twenty relevant collections at the IISH. There is a similar guide on the war and peace movements. The IISH has made some twenty online guides to its various collections. The IISH has the largest holdings worldwide for collections documenting the history of socialism and labour movements, and facilitates research on this theme in many countries. The library of the IISH has rich holdings in relevant literature.
Currently the IISH is digitizing many of its famous collections, but other less well known collections are being digitized, too. The IISH provides a list of the collections which will be digitized soon, with digital finding aids. The digital collections of the IISH will increasingly appear at the Social History Portal in cooperation with sister institutes elsewhere in Europe. Items from its digital collections can also be found at Europeana 1914-1918. The website of the IISH can be viewed in English and Dutch.