(1) Papers regarding various overseas observatories

Papers relating to the closure of Perth Observatory, Western Australia, 1912-1913, including letters from the Royal Society, the Royal Astronomical Society and Sir David Gill and correspondence with Downing Street and the Agent General for Western Australia.

Papers relating to the comparison of Greenwich and Helwan Observatory photographs on the introduction of the new telescope at Helwan, 1909-1912.

Correspondence with the Smithsonian Institution, Washington, concerning the establishment of a station in Mexico, 1910.

Correspondence with Professor Peddie concerning the proposal to establish an observatory at Dundee, 1911.

Correspondence with Professor Claxton concerning proposals to extend the Hong Kong Observatory, 1911.

Correspondence with the Lick Observatory concerning the continuance of the work of the D.O. Mills Observatory in Chile, 1911.

Letter from the Royal Observatory, Edinburgh, regarding the pension entitlements of assistants, 1912.

Correspondence concerning the provision of a reflecting telescope at Ottawa, Canada, 1912.

Correspondence with Hong Kong Crown Agents and U. Kullsberg concerning the supply of a chronometer for the Hong Kong Observatory, 1912.

Letter from the United States Naval Observatory, Washington, concerning relations with other departments and possible change to civilian control, 1913.

Despatch from the Foreign Office concerning astronomical work in South Russia and the expansion of observatories there, 1913.

Letter from P. Baracchi, Melbourne, concerning the measuring of longitude areas in Australia, 1914.

Letters concerning meetings of the curators of Durham University and the appointment of the Astronomer Royal to the post of curator, 1914-1926.

Correspondence with the Radcliffe Observatory, Oxford, concerning the proposal to erect a building near the 24-inch telescope, 1918.

Correspondence with the Leiden Observatory concerning the appointment of a new Director and the supply of publications, 1918.

Letter from the Director of the Uccle Observatory concerning suggestions for annual budget estimates for publications, 1919.

Correspondence concerning vacancies at the Helwan Observatory, Egypt, 1919.

Correspondence concerning the re-installation of wireless time signal equipment at Stoneyhurst, Blackburn, 1919.

Copy of the financial estimates for the Royal Observatory for 1919-1920, with correspondence on duty rosters, observing practices, etc., sent to the Paris Observatory, 1919.

Correspondence concerning the application of the Norman Lockyer Observatory for a grant, the attendance of the Astronomer Royal at the opening ceremony and a report submitted for scrutiny, 1919.

Correspondence with Cracow Observatory concerning time signal reception and publications, 1920.

Printed death notices received from abroad, 1925-1927.

Correspondence concerning the future of the Bidston Observatory, Liverpool, 1923.

General correspondence with observatories and individuals around the world, 1915-1926.

Correspondence with the Admiralty concerning the re-equipping of the Royal Observatory, Edinburgh, 1926.

(2) Papers concerning the proposed closure of the Perth Observatory

Letter from the Acting Government Astronomer to W.H.M. Christie, 17 September 1912, concerning the closure proposal and enclosing a newspaper article by H.B. Car-Lewis.

Letter from F.W. Dyson to D. Gill at the Cape, 12 October 1912, enclosing a copy of a newspaper report and asking for an early meeting to discuss the situation.

Letter from H.H. Turner to Dyson, 12 October 1912, asking for him to initiate action to save the observatory.

Letter from W.E. Cooke of Sydney to Dyson, 8 October 1912, stating that he is unable to assist with appointments at the observatory and giving opinions as to its state and the reasons for its retention.

Letter to Dyson from R.A. Sampson at the Royal Observatory, Edinburgh, 15 October 1912, giving details of the status of Perth astrographic work and stating that some of the plates are unsatisfactory but that the work should continue.

Three copies of a letter from Gill to Dyson, 17 October 1912, stating that if the case is properly presented, the State Government might alter its decision to close the observatory.

Letter from the Agent General, 21 October 1912. acknowledging receipt of letters from the Astronomer Royal and Gill.

Letter from Gill to Sampson, 25 October 1912, enclosing a copy of the Agent General's letter, and stating that the Astronomer Royal is to be asked to organise a memorial to save the observatory.

Letter from Gill to Dyson, 25 October 1912, enclosing a copy of the letter sent to the Agent General for Western Australia.

Letter from Gill to Dyson, 22 October 1912, stating that he has received a reply from the Agent General.

Letter from Gill to Dyson, 25 October 1912, enclosing a letter from Sampson at the Royal Observatory, Edinburgh.

Letter from Sampson to Dyson, 29 October 1912, stating that the memorial from the Royal Society and Royal Astronomical Society should supplement those from the Scottish Office and Royal Observatory, Edinburgh.

Letter from Dyson to M. Baillaud, Paris, 2 November 1912, asking him to write a letter in appreciation of the astrographic work done at Perth.

Letter to the Agent General, 7 November 1912, enclosing a copy of M. Baillaud's letter.

Acknowledgement from the Agent General, 8 November 1912.

Letter from Dyson to the Under-Secretary of State, Colonial Office, 8 November 1912, enclosing M. Baillaud's letter in support of the continuation of the Perth Observatory.

M. Baillaud's memorandum on the Perth Observatory, in French, 5 November 1912.

Letter from Dyson to the Scottish Office, 8 November 1912, enclosing a letter from Baillaud to Dyson and a copy of Baillaud's memorandum, with an acknowledgement from the Scottish Office.

Letter from Gill to Dyson, 12 November 1912, acknowledging a copy of a letter from W.A. Cooke.

Letter from the Secretary, Royal Astronomical Society, to the Colonial Office, 21 November 1912, with three copies of the memorandum against the closure of the observatory.

Letter from W.H. Bragg, Leeds, 14 November 1912, thanking Dyson for papers on the Perth closure.

Letter of acknowledgement from the Colonial Office, 16 November 1912, with regard to M. Baillaud's letter.

Letter from W.E. Cooke, Sydney, 19 November 1912, giving the latest news and views on the Perth situation and also the situation at Sydney.

Letter from Bragg to Dyson, 21 November 1912, thanking him for the papers and returning the same.

Letter from Dyson to the Colonial Office, 26 November 1912, enclosing the letter from M. Baillaud, Paris.

Further letter from W.E. Cooke of Sydney, 26 November 1912, updating the information in his previous letter.

Letter from Dyson to the Colonial Office under the Royal Astronomical Society cover, 26 November 1912, describing the work done at Perth and the equipment used.

Acknowledgement from the Agent General, 29 November 1912, enclosing a copy of a letter to Gill, including a copy of cable received from the Government of Western Australia stating that the observatory is to continue to operate until June 1913.

Letter from the Scottish Office, 29 November 1912, stating that the Astronomer Royal's letter has been sent to the Colonial Office for transmission to Perth.

Letter from W.E. Cooke, Sydney, 29 November 1912, enclosing a newspaper cutting regarding the six month reprieve for the observatory, but advising caution.

Letter from the Colonial Office, 30 November 1912, acknowledging receipt of M. Baillaud's letter on the Perth closure.

Dyson to Baillaud, 30 November 1912, stating that the observatory is reprieved for six months and thanking him for his help.

Copy of a Colonial Office acknowledgement to the Royal Astronomical Society, 30 November 1912.

Letter from Dyson to H.H. Turner, 9 December 1912, giving the latest information and expressing the view that the reaction in the United Kingdom was too soon and too hard.

Letter from Dyson to W.E. Cooke, 17 December 1912.

Letter from Gill to Dyson, 4 January 1913, stating that the further outcome must be awaited.

Letter from the Colonial Office to Dyson, 8 January 1913, enclosing a copy of a letter from the Governor of Western Australia.

Letter from Dyson to the Colonial Office, 9 January 1913, acknowledging receipt of the above letter.

Letter from Cooke to Dyson, 20 January 1913, concerning arrangements for a visit to England and expressing thanks for his help with the opposition to the Perth closure.

Letter from Ross to Dyson, 20 March 1913, expressing thanks for his assistance over the Perth closure and expressing the view that closure in the future is unlikely.

Letter from Gill to Dyson, 8 April 1913, acknowledging and returning the letters sent to him.