The monograph presents the results of a comprehensive study of the history of the creation and functioning of archival centers of Ukrainian political emigration in European countries in the interwar period, the process of acquiring and organizing the storage of their documentary funds was reproduced, the circumstances and ways of moving Ukrainian emigration collections during the Second World War and in the post-war period were investigated, their classification, processing and use The author reconstructed the composition of the documentary collections of the interwar period of the Ukrainian National Museum-Archive, Ukrainian Historical Cabinet and Museum of the Liberation Struggle of Ukraine in Prague, Ukrainian Library named after from. Petlyura in Paris. The book also highlights the history of the formation and specifics of the activities of Ukrainian archival centers on the North American continent in the second half of the 20th century.