Letterbook, autograph but for entries in another hand on pp. 242-4, comprising Cassandra's copies or abstracts of some 439 outgoing letters by her to various correspondents in her family and social circle from 3 August 1713 to 14 July 1735, 262 folio pages (and a few tipped-in leaves with copies of two letters by her and three to her added in a later hand, plus 57 blank pages), erratically paginated, in 18th-century calf, with the Chandos arms. 1713-35.
*WiC 11: Cassandra Willoughby, Duchess of Chandos, Letter(s)
Donated in 1936 by Winifred Myers, bookseller.
Edited from this MS in O' Day, pp. 69-327. A complete set of photostats of this volume, together with a 160-page typescript index with related genealogical notes made by Sir Ross Barker and given by him to Charles Collin Baker in 1945, is in the Huntington, STB Box 2 (3).