6 ALS, 1 TLS and 1APCS exchanged between IJG and Mrs Turing, mainly on the writing and publication of her biography. 10 Nov. 1957 - 21 May 1958.
Keywords: Good, Irving John (Jack); Turing, Sara; Turing, Sara: biography of son
Provenance: received from Prof. I.J. Good in 1979, photocopied from originals in his possession