Correspondence concerning the setting up of the Kiel Centralstelle, 1882.
Letter to Kiel undertaking to transmit telegrams between Kiel and Rio and vice versa, 1883.
Correspondence with L. Wells of the Eastern Telegraph Company concerning the transmission and payment of telegrams between London and Greenwich, 1883.
Invitation to the Central Stelle Committee meeting in Vienna, 16 September 1883, with a list of subscribers and an agenda.
Correspondence with Kiel concerning the telegram announcing the new comet being wrongly addressed, 1884.
Accounts of the Centralstelle Kiel, 1884.
'Election of the Officers and Committee of Kiel Centralstelle', April 1886, and lists of candidates and the Astronomer Royal's votes, 1886.
Accounts for the years 1885-1887.
Letter from J. Ritchie concerning the new 'Science Observer Code', with a letter to Kiel concerning its adoption, 1888.
Accounts for 1888, 1889, 1890 and 1892, with statistics on the number of telegrams sent out.
Letters to Professor Kruger sending accounts for telegrams, 1883-1885.
Statistics on telegrams received from Kiel during 1887-1892 in connection with proposals from the Royal Astronomical Society on the distribution of intelligence, 1892.
Correspondence concerning the election of Professor Bredicha to the committee of the Centralstelle, 1892.
Correspondence concerning H.H. Turner's letter to 'The Times' on the distribution of intelligence, with J.N. Lockyer's reply, 1892.
Letter from the Eastern Telegraph Company informing the Royal Observatory that the telegrams to Rio were stopped and then released by the Brazilian Government, 1893.
Memorandum from W.H.M. Christie to H.P. Hollis stating that the telegrams from Kiel to Rio were to be addressed as if they had been sent from Greenwich, 1894.
Circular from 'Moreing and McCutcheons General Commercial and Mining Telegram Code', 1898.
Enquiry from the Eastern Telegraph Company as to whether the address should be changed to 'Observatory, London', 1901.
Correspondence with the Eastern Telegraph Company and Kiel concerning the incorrect delivery of a telegram for Rio, 1907.
Instructions for how to write astronomical telegrams and explanations of the codes used, 1884-1901.