Columbia subject headings:
California--Politics and government--Bibliography.
Slavery--United States--Speeches in Congress--Bibliography.
United States. Congress (31st : 1849-1851)
Harvard subject headings:
California--Politics and government--Bibliography.
Slavery--United States--Speeches in Congress--Bibliography.
United States. Congress (31st : 1849-1851)
Princeton subject headings:
California--Politics and government--Bibliography.
Slavery--United States--Speeches in Congress--Bibliography.
United States. 31st Congress, 1849-1851.