Columbia subject headings:
Cities and towns--Europe--History--19th century.
Cities and towns--United States--History--19th century.
Sociology, Urban--Europe--History--19th century.
Sociology, Urban--United States--History--19th century.
Urbanization--Europe--History--19th century.
Harvard subject headings:
Cities and towns--Europe--History--19th century.
Cities and towns--United States--History--19th century.
Sociology, Urban--Europe--History--19th century.
Sociology, Urban--United States--History--19th century.
Urbanization--Europe--History--19th century.
Princeton subject headings:
Cities and towns--Europe--History--19th century--Sources.
Cities and towns--United States--History--19th century--Sources.
Urbanization--Europe--History--19th century--Sources.
Urbanization--United States--History--19th century--Sources.