Columbia subject headings:
Fugitive slaves--United States.
Secession--Southern States--Speeches in Congress.
Slavery--United States--Extension to the territories.
Slavery--United States--Speeches in Congress.
Harvard subject headings:
Princeton subject headings:
Fugitive slaves--United States.
Secession--Southern States--Speeches in Congress.
Slavery--United States--Extension to the territories.
Slavery--United States--Speeches in Congress.