Papers regarding the International Astronomical Union, including the following items:

Correspondence with Dr T. Elvius concerning the selected areas committee, 1963.

Correspondence with Dr Oosterhoff regarding Commission 27 on the names of variables in Magellanic Clouds, 1963.

Correspondence with Professor van der Kamp concerning Commission 26 on double stars.

Report to Commission 37 on globular clusters, 1963.

Printed programme of the Royal Astronomical Society, 20 September 1963.

Report on Commission 38 on the exchange of astronomers, 1963.

Correspondence and report on the 24th meeting of the Executive Committee at Liège, 1963.

Correspondence with Celia Payne-Gaposchkin and A.J. Wesselink regarding the designation of variables in Magellanic Cloud, 1963.

Correspondence with D.H. Sadler concerning Project West Ford, 1963.

Correspondence with P. van de Kamp regarding orbits of visual binaries, 1963.

Circular letter from Professor Haffner concerning Commission 37, 1963.

Correspondence with D.C. Martin concerning Symposium 20 and attendance grants, 1962, with additional correspondence with A.D. Thackeray.

Correspondence with O.J. Eggen concerning attendees at the Commission 37 conference, grants, etc., 1962.

Correspondence with the Admiralty regarding D.H. Sadler's visit to Russia, 1962.

Correspondence with Dr Naude, Dr R.H. Stoy, D.H. Sadler, A.D. Thackeray and E. Marais concerning the South African National Committee for the I.A.U., 1962.

Correspondence with W.S. Rapson and C. Hide concerning the South African National Committee, 1962.

Correspondence with Brigadier Bomford and R. Atkinson regarding longitude signs, 1962.

Correspondence with O.J. Eggen and F. Hoyle, 1962.

Programme for Symposium 20, 1961.

Correspondence with Dr Walker and Dr Heibig concerning the Commission 37 conference, 1962.

Estimates for the International Astronomical Union meeting, 1961.

Letter from F.P. Scott concerning the AGK3R Committee, 1961.

Material on the Current Radical Velocity Programme at Herstmonceux, 1961.

Correspondence on D.H. Sadler's appointment as General Secretary of the International Astronomical Union, 1961.

Correspondence concerning the visit of R. Atkinson and Mrs Sadler to the U.S.A., 1961.

Correspondence regarding attendance at the 11th General Assembly of the International Astronomical Union, Berkeley, California, 1961.

Correspondence with Professor Federov concerning the International Polar Motion Service Working Group, 1961.

Correspondence concerning D.H. Jones' Harkness Fellowship Award, 1961.

Correspondence with R.H. Stoy, the Admiralty and H.M. Smith concerning attendance at the I.A.U. General Assembly, 1961.

Draft report of Sub-commission 33c, 1961.

Brief description of double star work done at the Royal Greenwich Observatory, 1958-1961.

Correspondence concerning visits to Prague by M.R. Sadler and Dr Stoy, 1960.

Lunch invitations to H. Spencer Jones, Professor Stratton, Dr Eggen, Mr Sadler, Dr Kulkovsky, Professor Danjon, Dr Stoy, Dr Steinbeck, Professor Kukarhin, Professor Heckmann, Dr Goldberg and Professor Oort, 1959.

Printed information bulletin of the I.A.U., 1959.

Information sheet for Sub-commission 12a on solar eclipses, 1959.

Correspondence regarding meetings of committees and commissions, membership, reports, symposium and colloquium, correction of papers, visits of Royal Greenwich Observatory staff abroad, subscriptions, finances, lectures, grants, and proposals for new members of the I.A.U., 1956-1963. The correspondents include Professors Brouwer, Danjon, Mikhailov, Hagihara, de Jager, Oort and Eggen; Doctors Wilkins, Kovalevsky, Friche, Guinot, Petrie, Keer and Rodgers; Mr Sadler; D.C. Martin; R. Atkinson; F.P. Scott; P. Muller; and M. Semirot.