Columbia subject headings:
Hospitals--Massachusetts--Boston--History.
Hospitals--United States--History--19th century.
Hospitals--United States--History--20th century.
Harvard subject headings:
Hospitals--Massachusetts--Boston--History--19th century.
Hospitals--Massachusetts--Boston--History--20th century.
Hospitals--Massachusetts--Boston--History.
Hospitals--United States--History--19th century.
Hospitals--United States--History--20th century.
Princeton subject headings:
Hospitals--Massachusetts--Boston--History--19th century.
Hospitals--Massachusetts--History--20th century.