Correspondence In 1979 Sonnabend opened a private clinic, at 340 W 17th St, where he was able to treat his patients who were mainly gay men while he continued his research into sexually transmitted diseases. It was during his private practice that he saw an increase in kaposi sarcoma symptoms in gay patients. One file containing correspondence and memos to Sonnabend on sexually transmitted diseases and AIDS. It also contains a handwritten copy of patient notes. Added 2021: anonymous memo alerting doctors to increasing occurrence of Kaposis [sic] sarcoma, June 30 1981; office memo from Sonnabend re technical lab requirements and 'the vaccine' Nd,. Added 2022: Reference from Lawrence J. Downs for William Martin Added 2023 (tranche 2) Letter to his patients about practice cover while he is researching at Bethesda, Maryland, 1982; reference for JS for St Lukes-Roosevelt Hospital from Arthur England MD Aug 23,1999; letter to Sonnabend from Dr Dobozin about practice cover, 1985; card announcing opening of practice at 49 W 12th St Added 2023: report of a clinical investigation by Dept of Health 1986; letter from NY State Dept of Health re ADAP program changes (Aug, 1995) Added 2023 (tranche 2): anonymous typed self-diagnosis called 'My Case' extending to 6 pages. Mentions Sonnabend. Not strictly correspondence but probably from a patient.nd. Added 2023 (tranche 2) Letter to Aaron Sollam re. wording about his departure from a clinic seeing Stuyvesant Polyclinic patients. July 1999 Added 2023 (tranche 2) Letter from Strang Clinic NYC re a treatment 'Methyl-Gag' 1983 Added 2023 Letter and reference re finding new clinic for JS HIV patients, 1999 Added 2023: letter from Michael Lees and Jim Mann: note on reverse from S. Watney 'response to D. Yates Rist[?] attack on Sonnabend. n.d.; Added 2023: letter in Spanish from Dr. Humberto Abrao, Rio de Janeiro, re. AIDS. 20th Aug, 1985 Added 2023: Circular from NY University Medical School re appointments and publications, 1984 1979-1999