The Hungarian Collection officially starts with 1918, the year Hungary declared independence from Austria and proclaimed itself a republic. Holdings on the pre-1918 history of Hungary, however, are substantial. Primary and secondary coverage includes materials on World War I, the short-lived revolutionary Hungarian Soviet Republic of 1919, the Paris Peace Conference of 1919, the history of Hungarian diplomacy in the interwar and World War II period, the 1956 uprising, and the period since 1960 (particularly the role of the Communist Party). The holdings on World War II are supplemented by a voluminous collection of postwar memoirs, documents, and scholarly monographs sponsored predominantly by the Hungarian Communist Party. The postwar collection offers good research possibilities on many historical, political, governmental, and related subjects.
The archives holds the records from Hungarian embassies in the Soviet Union, 1934–41; in Spain, 1937–44; and in Switzerland, 1920–45. The papers of numerous diplomats are found in the collection, including those of Gyorgy Barcza-Nagyalasonyi, Laszlo Bartok, Tibor Eckhardt, Princess Hohenlohe, Stephen Kertesz, Elemer Radisics, and Janos Radvanyi. There is also an autobiography of Miklos Horthy. A collection of video interviews with participants in the 1956 Hungarian revolution was acquired several years ago. The most significant recent archival acquisition is the papers of Imre Pozsgay, Hungarian politician and Hungarian Socialist Workers' Party Central Committee member. These voluminous papers span more than thirty years of Pozsgay's political life and extensively document the final years of communism in Hungary.