Columbia subject headings:
Antislavery movements--America--History.
Slaves--Emancipation--America--History.
Harvard subject headings:
Antislavery movements--America--History.
Slavery--America--Justification--History.
Slaves--Emancipation--America--History.
Princeton subject headings:
Antislavery movements--America--History.
Slaves--Emancipation--America--History.