Columbia subject headings:
City and town life--United States--History--20th century.
City planners--United States--History--20th century.
Public health personnel--United States--History--20th century.
Social reformers--United States--History--20th century.
Social workers--United States--History--20th century.
Harvard subject headings:
City and town life--History--20th century.
City planners--United States--History--20th century.
Public health personnel--United States--History--20th century.
Social reformers--United States--History--20th century.
Social workers--United States--History--20th century.
Princeton subject headings:
City and town life--History--20th century.
City planners--United States--History--20th century.
Public health personnel--United States--History--20th century.
Social reformers--United States--History--20th century.
Social workers--United States--History--20th century.