Author/Creator
- Library of Congress. Congressional Research Service523
- East View Information Services449
- Project Muse427
- ebrary, Inc402
- American Council of Learned Societies156
- Project Muse. distributor146
- AM (Publisher), digitiser136
- British Film Institute, owner132
- ProQuest (Firm)109
- United States. Congress. Senate. Committee on Foreign Relations103
- United States. Congress. Commission on Security and Cooperation in Europe100
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on Europe and the Middle East93
- United States85
- Soviet Union81
- Lenin, Vladimir Ilʹich, 1870-192480
- Trotsky, Leon, 1879-194079
- United States. Congress. House. Committee on Foreign Affairs79
- United States. Central Intelligence Agency70
- United States. Congress. Senate. Committee on the Judiciary. Subcommittee to Investigate the Administration of the Internal Security Act and Other Internal Security Laws67
- Russia66