Goffman writes (p. 22): "On the boundaries of a willingness to unite are ex-mental patients -- only a relatively small number are currently willing to support MENTAL HEALTH clubs, in spipte of innocuous club TITLES which allow members to come together under a plain wrapper."
The references Goffman gives here are:
"A general survey is provided in H. Wechsler, "The expatient organisation: a survey", Journal of Social Issues, vol. XVI 1960, p. 47053.
Titles of such clubs include:
Fountain House Foundation
San Francisco Fellowship Club
For a study of one such club, see D. Landy and S. Singer, "The social organisation and culture of a club for former mental patients," Human Relations, vol. XIV 1961, 31-41. See also M. B. Palmer, "Social rehabilitation for mental patients," Mental Hygiene, vol. XLII 1958, 24-28.