Book digitized by Google from the library of the New York Public Library and uploaded to the Internet Archive by user tpb.
Title varies slightly
Place of publication varies
Some v. issued in revised editions
Some v. accompanied by supplements
Published: 1767-1831, by the order of the Commissioners of Longitude; 1832-1959, by the Lord Commissioners of the Admiralty, (1834-1959 prepared by the Nautical Almanac Office)