Columbia subject headings:
Comic books, strips, etc.--History and criticism.
Popular culture--History.
Harvard subject headings:
Caricatures and cartoons--Europe--History--19th century.
Caricatures and cartoons--United States--History--19th century.
Comic books, strips, etc.--Europe--History--19th century.
Comic books, strips, etc.--History and criticism
Comic books, strips, etc.--United States--History--19th century.
Popular culture--History
Princeton subject headings:
Comic books, strips, etc.--History and criticism.
Popular culture--History.