Archive of correspondence with the Royal Society of Arts, consisting of twenty-one letters from Gray, one copy, and carbons of fifteen replies.

The collection is in very good condition, with a few staple and pin holes. Gray's letters are signed 'Milner Gray' and occasionally 'Milner'. All but the first two, which are on Society of Industrial Artists letterheads, are on Design Research Unit letterheads. An early letter (5 April 1949), to Kenneth Luckhurst, Secretary, Royal Society of Arts, apologises for and explains a 'difficulty' which has arisen 'over the fees we estimated for completing the necessary working drawings and supervising construction of the permanent display screens for the Society's headquarters'. The rest of the correspondence makes clear Gray's role as an active member of the Society.