Miscellaneous sets of Observatory correspondence:

Correspondence between the Royal Observatory, Cape of Good Hope, and the Coast Lighthouse Commission, 1871-1876. There are letters regarding the first meeting of the new Commission, and copies of the Commission document and of letters between other Commission members concerning the survey of places for lights to be erected, with suggestions as to where lights should or should not be placed.

Correspondence regarding the Port Elizabeth Time Ball, 1871-1876, including the setting up of the time ball, which clock to use, the placing of the circuit under the control of the Telegraph Company, adjustments to the clock when installed, and delays and failures.

Correspondence with Her Majesty's Stationery Office, 1870-1875.

Correspondence with the Meteorological Commission, 1874-1878, regarding the establishment of new observing stations at Bloemfontein and Simon's Town, the purchase of instruments and the payment of salaries.

Correspondence with the Hydrographer of the Navy, 1870-1874, regarding the supply of charts and sailing directions to the Cape Observatory, adjustments to coastal lights, the supply of chronometers to Her Majesty's ships and star catalogues.

Correspondence and papers relating to the quarterly accounts of the Cape Observatory, 1873-1879.