Papers concerning the Astronomer Royal's leaves of absence, including the following items:

Copy of letters from Dr Bowen of the Mount Wilson and Palomar Observatories regarding an invitation to Richard Woolley to visit California, 1957.

Correspondence regarding a visit to Stockholm to receive the Degree of Doctor of Philosophy honoris causa from the University of Uppsala, 1956.

Correspondence regarding the opening of the Radio Observatory at Dwingeloo, 1956.

Correspondence regarding a visit to Hamburg to attend a meeting of the Committee of the Joint European Southern Observatory, 1956.

Correspondence regarding a visit to Oslo to attend the General Assembly of the International Council of Scientific Unions, 1955.

Correspondence regarding a visit to Hamburg to attend the Astronomical Symposium on Schmidt Telescopes, 1955.

Correspondence regarding a visit to Brussels to attend the Special Committee for the International Geophysical Year, 1955.

Correspondence regarding the re-opening of the Pulkova Observatory, Russia, 1954.

Correspondence regarding a visit to Stockholm to attend the celebration of the 200th Anniversary of the foundation of Stockholm Observatory and a visit to the U.S.A. to attend a conference on problems in astrometry held at the North Western University, 1953.

Correspondence regarding a visit to Amsterdam to attend the General Assembly of the International Council of Scientific Unions and a visit to Paris to attend an International Astronomical Union meeting, 1952.

Correspondence regarding a visit to Brussels to attend the Ninth Assembly of the International Union of Geodesy and Geophysics, 1951.

Correspondence on a visit to Oslo, 1950.

Letters from Dr Madwar of the Royal Observatory, Helwan, Egypt, inviting Sir H. Spencer Jones to visit Egypt, 1949.

Correspondence regarding a visit by the Astronomer Royal to South Africa, 1949.

Correspondence on a visit to Paris to receive the Degree of Doctor honoris causa presented by the University of Paris, 1949.

Correspondence regarding a visit to Copenhagen to attend the General Assembly of the International Council of Scientific Unions, and letters on the Astronomer Royal's visit to the United States, 1951.

Correspondence regarding a visit to Eastern Europe, including Czechoslovakia and Poland, and a visit to Beirut to attend an U.N.E.S.C.O. conference as a government delegate, 1948.

Correspondence regarding visits by the Astronomer Royal to Paris and Australia, 1947.

Correspondence regarding a visit to Brussels to receive the Degree of Doctor honoris causa at the University of Brussels, 1947.

Correspondence regarding a visit to India to attend the Indian Science Congress Association at Delhi, 1947.

Correspondence regarding a visit to Copenhagen to attend the 400th Anniversary of the birth of Tycho Brahe, 1946.

Correspondence regarding a visit to Paris to attend the French commemoration of the centenary of the discovery of the planet Neptune, 1946.

Correspondence regarding visits to the French and America zones in Germany, and to Austria, 1946.