"Balkan Peninsula" . . "Bulgaria" . . "1878 - 1944" . . . . . . . . . . "Correspondence, memoranda, and reports, relating to Bulgarian foreign relations and domestic policy, the Bulgarian role in the Balkan Wars and World War I, and Bulgarian dynastic affairs." . . . . "History" . . . . . "Ferdinand I, Czar of Bulgaria, papers" . . . . .