Correspondence regarding the 1952 Solar Eclipse Expedition, including the following items:

Correspondence with the bank regarding the transfer of money to Khartoum, 1952.

Inventories of equipment, apparatus, food and medicine, and notes and correspondence on packaging, shipment costs and customs dues, 1951-1952. The correspondents include Thomas Cook, the Admiralty and the Sudan Government.

Maps of Sudan and Iraq, 1951, showing the path of total eclipse of 25 February 1952.

Correspondence with individuals and departments, 1951-1952, including J.D. Pope, Professor Stratton, H. Spencer Jones, R. Atkinson, Professor W.M.H. Greaves of Edinburgh Observatory, H.A. Brück and Professor R.O. Redman, concerning various details of the expedition arrangements.

Correspondence with the Joint Permanent Eclipse Committee and minutes of meetings on 1 and 19 March 1951.

Details of sites for eclipse observations, procedures at the sites, the care and handling of apparatus, the setting up cameras, packing up, etc., 1951.

Minutes of a meeting of the Joint Permanent Eclipse Committee on 24 March 1950.

Correspondence with J.S. Hey, Professor Stratton, the British Council in Iraq and others regarding sites in Iraq and Kuwait, 1951.

Correspondence with the General Post Office; Royal Observatory, Abinger; United States Air Force Aeronautical Information Service; and others concerning time signals, 1951.

Correspondence concerning the visit to the Royal Greenwich Observatory by Dr M.R. Madwar and A.M. Samaha, 1951.

Expenses, claims and balance sheets for the eclipse expedition, Sudan-Iraq, 1951.

Notes on the R. Atkinson method, 1951.

Correspondence with the Admiralty on the expedition arrangements, including subsistence allowances and notices of Rugby Time Signal alterations, 1951.

Correspondence with A.R. Michaelis, Sydney University, on the use of cinematography in eclipse work.

Letter from Dr Madwar mentioning the death of Dr Lyot, 1952.

Correspondence with the Iraq Petroleum Co. Ltd on the return of equipment to the United Kingdom, 1952.

Correspondence with the Helwan Observatory and the Civil Secretary, Sudan Government, 1950-1952, concerning arrangements for the expedition, including the choice of sites, equipment for camping, the construction and shipping of observatory equipment, hotels, health, camp guards, permits and customs dues, the eclipse path and meteorological conditions.

Correspondence with the Helwan Observatory on solar photography, 1951.

Meteorological data supplied by M.R. Madwar.

Correspondence with the Foreign Office on the expedition sites in Iraq and the shipping of equipment, 1952.