50 Pa. Stat. § 570
The Department of Property and Supplies shall proceed, as soon as funds are made available therefor by appropriation, with the erection, construction and equipment of said Western State Psychiatric Institute and Clinic, which shall be sufficient to accommodate at least one hundred and fifty psychiatric patients and at least two hundred daily visits of psychiatric out-patients.
Upon the completion of said hospital, it shall be turned over to the Department of Welfare for management and the care, maintenance and treatment of psychiatric patients selected by the Department of Welfare, and for research and the training of medical and other personnel in mental diseases, mental defects and their complications. The superintendent of such hospital shall at all times be a physician of experience in the treatment of mental disease and mental defect.
50 P.S. § 570