Another posthumous collection of SP
's poems, Crystal Gazer, was published by the Rainbow Press
, which had been set up that year by Olwyn Hughes
at her brother
's suggestion to produce high-quality limited editions.
Tabor, Stephen. Sylvia Plath: An Analytical Bibliography. Meckler, 1987.
Feinstein, Elaine. Ted Hughes. Weidenfeld and Nicolson, 2001.