http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Beginning with Bull. Number 936, bulletins also include announcements of naval wireless telegraph station locations, call letters, and broadcast schedules.
Series of weekly bulletins presenting current nautical information for mariners. Bulletins contain brief notices of obstructions and dangers to navigation along Atlantic and Gulf coasts of U.S. and principal world ocean routes, including shipwrecks and derelict vessels, drifting buoys, and ice. Bulletins also list ships lost at sea; changes to lighthouses and other navigation aids; and signal letters newly assigned to U.S. merchant vessels by Bureau of Navigation, Treasury Department.
Electronic reproduction. [Bethesda, Md.] : ProQuest, 2014. digital, PDF file. ProQuest U.S. Executive Branch Documents Mode of access: World Wide Web via ProQuest website.