Correspondence regarding the Cape Observatory and Survey, divided into eight sections:

Official correspondence between G.B. Airy, E.J. Stone and the Admiralty, 28 March 1876 - 3 November 1877, including a report on the Cape Observatory by Stone for 11 August 1874 to 31 August 1876, with remarks by Airy; a copy of the 'Cape Catalogue of Stars for 1840'; and letters concerning the salaries of those working at the Cape.

Official correspondence, 31 January - 12 December 1879, regarding E.J. Stone's request for a pension following his resignation; D. Gill's appointment; and G.B. Airy's comments on the annual estimates for the Cape Observatory for the years 1880-1881.

Official correspondence between the controller of H.M.S.O. and G.B. Airy regarding the supply of portfolios, boxes and cartridge paper books for the Cape.

General correspondence with E.J. Stone, including letters from W.H.M. Christie and G.B. Airy on the use of the photoheliograph, 10 March 1876; reports on work being carried out; and letters on Stone's appointment as Director of the Radcliffe Observatory.

General correspondence between G.B. Airy and D. Gill following the latter's appointment as Cape Astronomer, 28 February - 28 December 1879.

General correspondence regarding the appointment of a Third Assistant, R.T. Pett, 20 June 1876, and W.H. Finlay's resignation, 8 January 1877.

Correspondence between D. Gill and G.B. Airy on the progress of the Cape Survey, including printed copies of letters from Gill to the Governor urging a re-survey.

Correspondence regarding the supply of a double-image micrometer and the printing and publication of Cape observations.