Correspondence, writings, conference proceedings, reports, bulletins, serial issues, clippings, other printed matter, photographs, maps, other pictorial materials, and memorabilia, relating to the history and culture of Bulgaria, activities of the post-World War II Bulgarian émigré community, and activities of the World Anti-Communist League, the Anti-Bolshevik Bloc of Nations and other anti-communist organizations. Includes diaries of Georgi Drenikov, father of K. Drenikoff, and commander of the Bulgarian air force during World War II.