Letters from D.J. Finch, Science Research Council, and H.A. Brück, Royal Observatory, Edinburgh, enclosing copies of translated letters from Hans Elsässer, Max Planck Institute, and G. Righini, Florence Observatory, regarding site testing in Greece, Italy and Spain by German and Italian astronomers.

A copy of a letter from H.H. Atkinson to D.W.N. Stibbs, 1 November 1972, enclosing Hans Elsässer's graph of the total area of optical telescopes as a function of time for different countries.

Copies of letters from C.G. Wynne, 29 January 1974, and Dr Hans Elsässer, Max Planck Institute, undated, to J.D. Pope concerning the spectroscopy of various telescope systems.

A copy of a paper by M.J. Smyth entitled 'Discussion on Italian and German plans for national observatories', 22 November 1969, in which he describes visits he has made to Professor Cimino in Italy and to Hans Elsässer in Germany.

Two reports on sites tested in Europe:

1. 'Preliminary Report on the Climatic Conditions of Eastern Sicily' by M.G. Fracastoro, in Italian, with an English translation.

2. 'Astronomical Station in Southern Europe' by Hans Elsässer, Professor of Astronomy, Heidelberg University, in German, with an English translation. There is also a related letter from Elsässer to Professor Brück, Edinburgh, 8 July 1969.