Columbia subject headings:
Comic books, strips, etc.--History and criticism.
Slavery in literature.
Harvard subject headings:
Black people in literature
Comic books, strips, etc.--Belgium--History and criticism.
Comic books, strips, etc.--France--History and criticism
Comic books, strips, etc.--History and criticism
Hergé, 1907-1983. Tintin
Slave trade--History
Slavery in literature
Tintin (Fictitious character)
Princeton subject headings:
Comic books, strips, etc.--Belgium--History and criticism.
Comic books, strips, etc.--France--History and criticism.
Hergé, 1907-1983. Tintin.
Slavery in literature.
Spirou--History and criticism.
Tintin (Fictitious character)