The Polar Bear Expedition Digital Collections consist of materials pertaining to the European expedition of American troops in the aftermath of the First World War to help the Russian army against Germany. The collections have been digitized by the Bentley Historical Library of the University of Michigan, Ann Arbor. The digital collections can be searched using either the free text search or an advanced search mode. You can also browse the collection. The accompanying guide brings you to finding aids, lists of diaries, maps and photographs, and you can browse items by collection, personal name, geographic name, military unit, media type and subject.