Navy Department Libraryhe Navy Department Library acquires, organizes, preserves, and provides access to naval and maritime history, customs, and traditions through reference services and Internet outreach. One of the few major military historical libraries open to the public, the library serves an international audience. The Library's collection consists of 114,000 book titles, 374,000 manuscripts, and 189,000 periodicals, with an emphasis on naval, nautical, and military history including foreign navies. Individual highlights of the collection include the US Navy's first signal book; calling cards collected by John Paul Jones in Russia; hundreds of unpublished World War II administrative and cryptological histories; and documents captured on German submarine U-505 in 1944.