Bonhams Knightsbridge (London) is set to auction some major Sylvia Plath and Ted Hughes items belonging to her daughter Frieda Hughes in their Fine Books and Manuscripts auction  on 21 March 2018 . Interest in Plath has been at a fever pitch of late. For example, Bonhams has overseen several other auctions in the last few years of typescripts, photographs, and books  15 November 2017 [ results ];  15 June 2016  [ results ];  16 March 2016  [ results ];  11 November 2015  [ results ]). And, off course, in the last year the world was given  The Letters of Sylvia Plath, Volume 1940-1956 . The second volume is due out on 6 September 2018 (Faber, the same day, by the way, that the paperback of Volume 1 will be published) and on 30 October (HarperCollins). When asked in  an interview last year with Liz Jones , "Is she careful or careless of her heritage?" Frieda Hughes alluded to a cache of materials saying "I am careful. I have letters,...