Miscellaneous correspondence with the Royal Observatory, Greenwich:

Letters on technical matters from F.W. Dyson, A. Crommelin and J. Jackson concerning the motion of the Moon, star catalogues and proposed changes to tables, 1923-1925.

General correspondence between L.J. Comrie, F.W. Dyson and the Chief Assistant at Greenwich, 1926, including letters regarding calculations of the places of Bucklund-Hough stars and the Eros comparison stars.

General correspondence regarding additions and alterations to the 'Nautical Almanac', general queries concerning specific parts of tables, and other matters, 1931-1938. The correspondents include the Nautical Almanac Office; the Royal Observatory; and H.W. Newton, editor of the 'Observatory' magazine.