| Description | Includes:
-three letters exchanged between Robert Cecil, The Wallace Collection, and Simpson, dated 3-6 February 1961, concerning a picture by Willem van Mieris titled 'Nymph and Satyr'
-seven letters exchanged between Francis Watson, Simpson, and Miss Wolfe, Knoedler's London office, dated 5 September 1960-7 October 1966, concerning various subjects including research on artists, a contribution to the Lugt appeal, and entries in sale catalogues |