File primarily contains letters from individuals, but also includes copy letters of Edith Simon. Identified correspondents include Eric Reeve; Leonardo M. Mayer (known as 'Len'); possibly 'April' Taylor; Rodney Paris, Strand Glassfibre Ltd.; 'Katherine'; possibly 'Tina' Lucas; Blanche Marvin, Blanche Marvin Agency; Mr. S. Downs, British Steel Coorporation; Dr. Isobel Spencer, The Scottish Arts Council; A.J. Crouch, David Higham Associates Ltd.; Vera Mayer; Susan Kaufman; James Dunbar-Nasmith; Christian Zimmer, Le Monde, Paris; possibly 'Jeanne'; Barbara Crow, British Broadcasting Corporation; Miss E.M. Douglas, Edinburgh University Students' Association; Mrs. K. Maccabe, Theatre Workshop Edinburgh; possibly Peter West; Ernest Kay, International Biographical Centre; Melda Gillespie, Arena, British Broadcasting Corporation (BBC); Ian Young, Midlothian District Council; Dr. Ing. Fritz Rosendahl; Joan Lewis, I.J. Lyons Charitable Trust; Elizabeth Bird, David Higham Associates Ltd.; Sam Engler; Miss J. Johnstone, Morris and Steedman, Architects and Landscape Architects; David Higham; Lawrence Knight, Films of Scotland; J.T. Bannatyne, The Royal Fine Art Commission for Scotland; Lena McLaren, The Scottish Arts Council; 'Mette'; Elspeth Cochrane, Elspeth Cochrane Agency; Alexander Dunbar, The Scottish Arts Council; Sir Norman Graham, Scottish International Education Trust; 'Philip'; Allen Wright, The Scotsman; T.B. Moore, Cruden Foundation Ltd.; Professor Alan Thomson, Department of Economics, Heriot-Watt University; 'Nell'; W. Bell, Department of Recreation, City of Edinburgh District Council; possibly Mrs. Marjory Heath-Gracie; Sue Grayson, The Serpentine Gallery, The Arts Council of Great Britain; Monica Pidgeon; Kathleen Austin, The Saltire Society; Antony P. Shearman, City Librarian, Edinburgh City Libraries; and 'Bill.'

File also includes a copy of Edith Simon's entry for inclusion in the Scottish Arts Council's 'Artists' Register' (May 1978); an undated typescript memorandum by Simon entitled 'Memorandum on Thoughts on [D]eacon Brodie Serial'; a copy of a memorandum of agreement between Edith Simon and AMS Press for the US publication of The Piebald Standard (March 1976); and an undated work list of prints and transparencies.