Ok... I've found it !
[ AUTOGRAPHS ] [ BOOKS ] Subject to VAT - Barrie (Sir James Matthew, 1860-1937). A collection of seven Autograph Letters Signed ('J.M. Barrie'), 28th November 1892 to 24th May 1926, all addressed to J.M. Barrie and literarature fan Miss Susanna E. Dove, Falfield House, Falfield, Glos., conerning the art of writing, the merits of biographies as against novels, suggested reading, the press and its untrustability in its reportage on him, weather, planned journies, thanks for flowers, etc., some in a very difficult hand, 1 to 4 pp., 8vo, with orig. envelopes, together with two port. photos (by Fred Hollyer and Elliott & Fry), each with signed presentation inscription to Miss Dove to versos, each appro. 13 x 10 cm, plus afurther twenty- two ALsS from Barrie's wife Mary to Miss Dove, mostly London, c. 1894- 1908, largely writing on her husband's behalf (two written before they were married) telling of his health, writing and publishing activities planned trips, and most usually thanking Miss Dove for her flowers, mostly one to four pages, 8vo, all but one with orig. envelopes, plus two related letters by David Barrie and C. Greene on behalf of Sir James Barrie, plus a further group of eighteen Autograph Letters Signed addressed to Miss Dove, from other authors and similar, c. 1873 1926, generally of a similar nature thanking miss Dover for her praise flowers, etc., mostly one or two pages, 8vo, with orig. envelopes, the authors incl. Sybil Thorndike, B.W. Leader, R.M. Ballantyne, Henry Shorthouse, Albert Fleming (3 plus printed note about Langdale Linen), Stanley Weyman (4), Hugh Macmillan, E. Armitage, A. McLaren and S.D. Anderson (approx. 50)
So, my five letters are coming from this lot.
Chapter closed.