(1) General correspondence regarding International Geophysical Year, including committee and sub-committee papers, minutes of meetings, I.G.Y. programmes, observations, and correspondence with British and international institutions and observatories. The papers include the following items:

Correspondence with Dr J.M. Stagg concerning geomagnetic data, 1957-1960

Correspondence with Dr W. Markowitz, H.M. Smith and J.D. Balfe concerning the Lunar Camera Programme, May 1959.

Correspondence of R. Woolley and E.H. Vestine concerning the World Magnetic Survey, December 1958.

Correspondence of the Hydrographer, R. Woolley and Dr Martin concerning the loan of instruments to the Royal Society for the Antarctic Expedition, 1958.

Correspondence, resolutions, outline plans, recommendations, etc., relating to the British National Committee for the International Geophysical Year, 1956-1960.

Copies of the Report of the 5th meeting of the Comité Spécial Année Géophysique Internationale in Moscow, 1958.

Correspondence with the Office of Naval Research, Washington, concerning instruments for use by the Royal Greenwich Observatory in the Lunar Camera Programme, July 1958.

Correspondence concerning the participation of the Cape Observatory in the Lunar Camera Programme, April 1958.

Correspondence with Dr Markowitz regarding the Lunar Camera Programme, 1958-1959.

Correspondence with Dr Stagg concerning geomagnetic data, July 1957.

Correspondence concerning International Geographical Year warnings and alerts, and also ursigram codes, 1957-1960.

Correspondence concerning the annals of the International Geophysical Year, 1957.

Correspondence with the B.B.C. concerning a television programme on the International Geophysical Year, including a draft script, April 1957.

Notification from the Conseil International des Unions Scientifiques of a meeting of the Federation des Services Permanents d'Astronomie de Geodesie et de Geophysique (F.A.G.G.S.), December 1956.

(2) General correspondence regarding research and the application of artificial satellites, minutes of meetings of the committee on U.K. participation, British National Committee reports and other material. The papers include the following items:

Report by Dr J. de Graaff-Hunter, April 1960.

Report by Professor H.S.W. Massey, 1960.

Reports by W.R. Hawthorne and Sir Arnold Hall, October 1958.

British National Committee report on rockets and satellites, August 1958.

Reports by Sir C. Hinshelwood and Dr Martin, November 1958.

R. Woolley's article on artificial satellites, October 1958.

Statement by Dr Massey, 1958.

Extract from 'Hansard' concerning the Russian satellite, October 1957.

Further correspondence regarding Royal Observatory observation of the Russian satellite, 1957.

Correspondence with R.H. Stoy and F. Whipple concerning the Royal Greenwich Observatory's observation of Russian satellites, 1956-1957.