The Bernard Diederich Collection includes both papers and media. Diederich's papers constitute over 130 boxes (143 linear feet); they include Diederich's telegraphs and telexes, his reporter's notepads, and his interview notes, as well as historical documents, such as Central American and Caribbean newspapers and political posters and booklets. The papers also include his private correspondence, which reveals the many challenges encountered by journalists who work in Latin America and the Caribbean. The media collection contains over 20,000 slides and photos that document Diederich's travels. It also includes videotapes and audio cassettes with Diederich's many interviews with Central American and Caribbean leaders.
