Commissioners Of Longitude
(1)
Nautical Almanac Office (COR)
(1)
Nautical Almanac Office (COR)/ Her Majesty's Nautical Almanac Office (COR)
(1)
Naval Observatory (EDT)/ Defense Department (COR)
(1)
U. s. Nautical Almanac Office
(1)
U.S. Naval Observatory (COR)/ United Kingdom Hydrographic Office (COR)
(1)
United States Govt Printing Office (COR)
(1)