Columbia subject headings:
Communication and culture--United States.
Libraries and scholars--United States--History.
Research libraries--United States--History.
United States--Intellectual life.
Harvard subject headings:
Communication and culture--United States.
Libraries and scholars--United States--History.
Research libraries--United States--History.
United States--Intellectual life.
Princeton subject headings:
Communication and culture--United States.
Libraries and scholars--United States--History.
Research libraries--United States--History.
United States--Intellectual life.