Columbia subject headings:
Gurney, Joseph John, 1788-1847. Familiar letters to Henry Clay.
Slavery--United States--Controversial literature.
Slavery--United States.
Harvard subject headings:
Gurney, Joseph John, 1788-1847. Familiar letters to Henry Clay.
Slavery--United States
Slavery--United States--Controversial literature--1840.
Princeton subject headings:
Gurney, Joseph John, 1788-1847. Familiar letters to Henry Clay.
Slavery--United States.