Contains: A. Papers consisting principally of Airy's voluminous correspondence over his 46 years as Astronomer Royal, though there are numbers of scientific papers and engineering drawings, for instance in connection with the building of the Airy Transit Circle, as well as mathematical work, notebooks, journals and many administrative records created in the running of the Royal Observatory; B. Documenation of important topics and events, such as the building of the Airy Transit Circle, ca. 1850, later to define the Earth's prime meridian; time distribution by electric telegraph, from 1850; introduction of photographic registration of observations, particularly in meteorology; introduction into Britain of the 'American Method' of electrical recording of transit timings. C. The following is a partial list of the names of corresondents and others as they appear in the handlist to this class of papers in RGO Archives. It must be remembered that this is not necessarily an exhaustive list of names as they appear in the papers themselves. Researchers interested in a particular period are invited to write to the RGO Archivist at the above address if they are interested in particular individuals whose names do not appear below, but who could possibly have been in correspndence with the person or institution responsible for creating the class. Correspondendts: C. Abbe; W. Abney; J.C. Adams; G.B. Airy; H. Airy; Hilda Airy; Lady. Airy; Mrs. R. Airy; W. Airy; B. Amici; D. Arago; F. Argelande; Arnold; H.S. Atwood; Dr. A. Auwers; F. Baily; Sir J. Barrow; F.W. Bessel; J. Firmingham; W. Birt; Roguslowski; G.P. Bond; W.C. Bond; L. Borelli; J. Bradley; C. Bremiker; Sir D. Brewster; Sir T. Birisbane; Dr. C. Bruhns; J. Buckingham; Mr. Burnham; A. Busch; R.C. Carrington; Prof. A. Cayley; Sir G. Cayler; Prof. J. Challis; S.H. Christie; W.H.M. Christie; A.C. Clairaut; M.A Cornv; W. Crookes; C. Darwin; G.B. Donati; A.M. Downing; Dr. H. Draper; J. Dreyer; J. Ellis; J.F. Encke; G.A. Erman; Euclid; L. Euler; A.H. Fizeau; M. Fizeau.; Dr. J. Forbes; J. Foucault; J. Fraunhofer; Fresnal; A. Gaillot; G. Galle; J.P. Gassiot; K. Gauss; Sir D. Gill; J. Glaisher; J.T. Goddard; B. Gould; J. Green; S. Grimaldi; Sir H. Brubb; T. Brubb; A. Hall; E. Halley; P. Hansen; C. Hansteen; W. Harkness; O Heaviside; T. Henderson; P.P. Henry; A.S. Herschel; Sir J. Herschel; J. Hind; E. Holden; J. Houzeau; W. Huggins; J. Ivory; P. Janssen; M.J. Johnson; J. Kepler; A. Kupffer; J. Lamont; S. Langley; W. Lassell; Sir J. Lockyer; Sir. J. Lubbock; C. Lyman; J. Madler; Rev. Dr. N. Maskelyne; Mrs. Maskelyne; W. Maunder; M. Mitchell; F. Moigno; and Sir I. Newton; among others.