In 1950 the Yale Observatory published in Vol. 22 of its Transactions the concluding volume of the photographic repetition of the AG catalogues between declinations +30°and — 30° During the past year the supplementary Vol. 23 has also appeared. An important part of the contents of this supplementary volume is the comparison with the General Catalogue, both as to position and proper motion, of all the zones within the limits +30° and — 30° This is therefore an appropriate time for an evaluation of the programme to date and an indication of its future possibilities. Before taking up this subject I should like to record that the project was initiated by the late Prof. Frank Schlesinger who was the Director of the Yale Observatory from 1920 until 1941. Much of the credit, for the work belongs to Dr Ida Barney, who has made one-half of all the measurements and supervised all of the calculations and the preparation of the printer's copy for the various volumes. She has been in full charge of the work since Prof. Schlesineer's retirement.