The banned books previously housed in the Imperial Library are made available as part of the general materials, and the banned books previously held by the former Ministry of Home Affairs are categorized as valuable books and made available for reading with a certain level of restriction.
旧帝国図書館所蔵の発禁図書は一般資料の一部として、旧内務省保管の発禁図書は貴重書扱いのため一定の制限下で閲覧に供されている。