| Description | Personal correspondence to Sonnabend  and general correspondence from staff at the National Institute for Medical Research while Sonnabend was employed at Mount Sinai. Also includes job  applications and feedback, correspondence between 1972-1973 when Sonnabend was back to  London from working at Mount Sinai. Includes legal document between MRC and Sonnabend Added 2023 (tranche 2) section of draft personal typed letter on MRC paper; letter from 'Helio' re. returning to NIMR, 1967; 2 letters from M. Kerr, 1970-71; 1 letter from 'Todd' 1971
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