An account of the going of Mr. John Harrison's watch, at the Royal Observatory, from May 6th, 1766, to March 4th, 1767. Together with the original observations and calculations of the same. By the Revd. Nevil Maskelyne.
Maskelyne, Nevil,1732-1811.
Great Britain.Commissioners of Longitude.
London : printed by W. Richardson and S. Clark; sold by John Nourse, and Mess. Mount and Page,
1767.
'Published by order of the Commissioners of Longitude'.
ESTC