My great-grand uncle Emanuel Singer was a founder and Chief Medical Officer at the Workmen's Circle Sanitorium (1920), just outside of Liberty (Sullivan County). He had TB himself and found the mountain air helped him recover. Sadly, his 7 year old son Chester died of TB in 1925.
Also just outside of Liberty in White Sulphur Springs, was the famous Loomis Sanitorium (1896).
I don't know if there are available records for either. You can probably contact the Workers Circle to see what they have.
BTW: Manny Singer's mother (my 2GGM) was born Esther GLUCK in Saros megye, Hungary (now Presovsky kraj, Slovakia). Daughter of Moses Gluck.
Researching Goldner, Singer, Neuman, Braun, Schwartz, Gluck, Reichfeld (Hungary/Slovakia); Adler, Roth, Ader (Galicia); Soltz/Shultz/Zuckerman/Zicherman (Vitebsk, maybe Lithuania), Wald and Grunfeld (Secovce, Slovakia fka Galszecs)