United States and the Russian Civil War: the Betty Miller Unterberger collection of documentsPart of Gale Archives Unbound. This collection covers World War I and its immediate aftermath, concentrating on America's role in the Russian Civil War and early relations between the United States and the newly formed Soviet Union. Consisting of approximately 10,000 documents pulled from over 50 repositories around the world, including the former Soviet Union, most of this collection is in English, with 80 percent of the foreign-language materials having been translated or accompanied by English-language abstracts.