The population surveyed consisted of all cases referred to the Social Service-Mental Health Section of the El Rio Santa Cruz Neighborhood Health Center (NHC) from June to October 1971. The NHC provides comprehensive mental health services to the predominantly Mexican American Model Cities area of Tucson, Arizona. The principal contact person at NHC--social worker, psychologist or psychiatrist--filled out an information schedule on each patient. This schedule included demographic information, social history, and the presence and intensity of certain symptoms and problem behaviors. The findings suggested that this NHC service was able to reach a high risk Mexican American population frequently missed by mental health programs, contrary to the findings of other studies. The patients seen were predominantly poor, young adult Mexican American women with marital problems, somatic complaints, and symptoms of depressions. (KM)