The University of Colorado at Boulder Libraries' digital World War I collection offers a rich array of primary-source material relating to the War selected from the World War I "Pamphlets" Collection housed in the CU Archives. The collection consists of over 1,200 individual titles representing a staggering range of genres, authors, geopolitical units, and subject matter. A selection of core works from the rich body of materials in the collection is currently available online. This resource offers full-text searching capability along with visualization tools that facilitate alternate avenues of exploration in the collection.