Detailed correspondence regarding eclipses and eclipse expeditions, including travel arrangements, equipment and medical supplies, including the following items:

Correspondence with Paul Nadeau of the Canadian Royal Astronomical Society regarding the total eclipse of the Sun on 20 July 1963.

Correspondence with Eremildo Luiz Vianna concerning the partial solar eclipse on 15 February 1961 and the central line of passover in Yugoslavia.

Correspondence with Dr J. Dommanget, Royal Observatory, Belgium, 1958, regarding the eclipse of 25 December 1954.

Correspondence with Professor R.O. Redman regarding the solar eclipse of 23 October 1957.

Correspondence between Dr D.M. Cameron and R. Atkinson concerning an eclipse method, 1957.

Minutes of the Joint Permanent Eclipse Committee meetings of November 1955 and 14 January 1955.

Letters from Peshoton Dubash, Karachi, regarding the partial eclipse of the sun observed from Karachi on 20 June 1955.

Correspondence concerning the solar eclipse of 30 June 1954, including letters regarding the eclipse expedition to Simrislund, Sweden; travel arrangements; eclipse equipment; etc. There is correspondence with R. Atkinson, Professor G.C. McVittie, Professor B. Lindblad, Professor R.O. Redman and H. Spencer Jones, and letters regarding eclipse time signals.

Telegram and letters from J.P. Bardin of Moscow, inviting Britain to send a scientific expedition to the U.S.S.R. to observe the total eclipse of 30 June 1954.

Correspondence with H.S. Spigel from Austria regarding the total lunar eclipse of 26 July 1953.

Correspondence regarding the solar eclipse of 1 November 1948 and observations obtained by R. Atkinson and J.D. Pope near Mombasa, 1953.

Correspondence with M.R. Madwar of the Royal Observatory, Helwan, Egypt, 1953, regarding plates obtained by B.F. Lyot at the eclipse of 25 February 1952.

Detailed correspondence of 1951-1953 concerning the Royal Greenwich eclipse expedition for the total solar eclipse of 25 February 1952 (viewed in Khartoum), comprised of R. Atkinson, J.D. Pope, A.E. Cordwell and Dr N. Barocas. There is detailed correspondence regarding travel and medical arrangements, eclipse arrangements and eclipse time signals needed for the expedition. The correspondents include Dr A.M. Samaha, Royal Observatory, Helwan; A. Danjon; R.O. Redman; G. Abetti; V. Baracas; H.A. Brück; Professor Stratton; R. Atkinson and Sir H. Spencer Jones.

Letter from H. von Klüber regarding the death of Dr B.F. Lyot in Cairo, 1952.

Report by R.O. Redman on the solar eclipse of 25 February 1952.