3 autograph letters, signed. Ninewells, 17 September 1755; no place of writing given, 23 September [1756]; Edinburgh, 15 October 1757. This file also includes a typescript transcript of the letter of 1756, an extract from a bookseller's catalogue and 1 autograph letter, signed from Dr J.Y.T Greig to J.M. Keynes on its provenance, date and addressee, 1931.