Catherine Sutherland (Deputy Librarian (Pepys Library & Special Collections) Magdalene College, Cambridge CB3 0AG) summarized the letter to K. Blackwell on 23 May 2016):

"Patricia Russell thanks IAR for ‘the kind note and invitation’ but she (and Bertrand?) do not go out for lunches because they interfere with work, but they do accept invitations to tea. She then talks at length about titles: ‘of course titles are silly: so few that matter are Gothic cathedrals’ (presumably Richards had commented on this in previous correspondence or conversation), and that ‘Professionally, naturally, he prefers to go on being Bertrand Russell.’"

The letter, an ALS of 2 sheets, is filed in box 56 of the Richards Papers.