Eleven letters, 1975, to John Petts relating to a retrospective exhibition of his work held at the Glynn Vivian Art Gallery, Swansea, including letters of appreciation from Kyffin Williams, John Piper, Lord Snowdon, Glyn Jones, Gwynfor Evans, Moelwyn Merchant and George Thomas, Viscount Tonypandy, together with a typescript draft of the catalogue and a draft of the cover design by John Petts.