Memoranda and notes to staff concerning portable instruments and property of the Royal Observatory, 1875-1882.

Letter of thanks to the Director of the Science Museum for the gift of a photograph of Harrison's chronometer No. 2, 1928.

Correspondence with the State Research Institute of Geodesy and Cartography, Moscow, concerning an exchange of almanacs, 1933.

Correspondence with Lord Bishop of Guildford, 1934, concerning his presentation of two sketches of the Royal Observatory drawn by a Frenchman in 1699.

Correspondence with Mrs Tomkins concerning the gift to the Royal Observatory of a machine for grinding mirrors, 1935.

Letter of thanks to the Radcliffe Trustees, 1935, for the gift of an original manuscript by John Flamsteed of the British Catalogue, 1701, and a manuscript volume by Nathaniel Bliss of observations made in Oxford during 1755-1863.

Correspondence with Professor Degner concerning the gift of three volumes of logarithmic tables, 1936.

Correspondence with the National Portrait Gallery and Messrs F. Haines and Sons regarding the restoration of portraits of Bradley and Dollond, and the regilding of the portraits, 1889.

Correspondence with Mrs Hayes concerning her offer for the Royal Observatory to purchase a copy of a portrait of James Bradley, which was declined, 1897.

Receipt for a mercury trough, 1913.

Enquiry from H.W.G. MacLeod concerning the purchase of lantern slides of Mars, 1920.

Circular from the Department of Commerce concerning revised mailing lists, 1920.

'Philosophical Magazine', Vol. 39: 'A note on the equivalent shell of a circular current'.

Request from L. Roberts for the use of an old telescope, 1922.

Copies of letters from Sir Oliver Lodge, R.A. Millikan, H.C. Plummer and A.A. Robb discussing the 'Theory of the shell of a circular current', 1919.

Enquiry from F.G. Ball concerning the worth of a book titled 'Silby's Illustration of Astrology', which was in the possession of his neighbour, 1927.

Correspondence with H.S. Rice of the American Museum of Natural History concerning the loan of fourteen photographic transparencies for an exhibition at the planetarium in New York, 1935.