- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)953
- Radio Free Europe/Radio Liberty, Inc - Research Institute20
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- Soviet Red Archives9
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- UPTIN5
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- Samizdat Archives of Radio Free Europe4
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- Ajtony, Árpád2
- Allworth, Edward2
- Balogh, Eva S.2
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- Gábor Magos2
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