Columbia subject headings:
African Americans--Colonization.
Antislavery movements--United States.
Frelinghuysen, Theodore, 1787-1862.
Slavery--United States--Controversial literature.
Harvard subject headings:
Frelinghuysen, Theodore, 1787-1862.
Slavery--United States--Controversial literature.
Princeton subject headings:
Frelinghuysen, Theodore, 1787-1862.
Slavery--United States--Controversial literature.