The digital collection American war posters from the First World War has been created by the Bancroft Library, University of California at Berkeley. The collection contains nearly 170 posters created in the United States between 1914 and 1919. This digital collection is not directly available at the website of the Bancroft Library, but instead it can be viewed both at the Calisphere digital portal and in the Online Archive of California (OAC).
The Bancroft Library has also digitized 68 British posters from the First World War (Calisphere; OAC), some 75 Canadian First World War posters (Calisphere, OAC), and 26 French posters and broadsides from this period (Calisphere, OAC). Both Calisphere and OAC offer a free text search within the collections. OAC allows also searching in the collection guide for non-digitized items.