The Gordon W. Prange Collection is the most comprehensive collection in the world of print publications issued in Japan during the immediate post-World War II years, 1945-1949. The Collection comprises virtually everything published on all subjects during this period - books, pamphlets, newspapers, periodicals, news agency photographs, posters, maps and related archival materials.
The contents of the Prange Collection once constituted the files of the Civil Censorship Detachment (CCD), an operating unit of the Supreme Commander of the Allied Powers' (SCAP) Press, Pictorial and Broadcast Division during the Occupation of Japan. Between 1945 and 1949, the CCD was responsible for reviewing all Japanese publications to identify violations of the Code for the Japanse Press (See this blog post). When violations were identified by CCD examiners, censorship action was taken. The Collection contains approximately 600,000 pages of censorship documents.