Columbia subject headings:
Harvard subject headings:
Fugitive slave law of 1850.
Fugitive slaves--United States
Hossack, John--Trials, litigation, etc.
Slavery--United States
Slavery--United States--Controversial literature.
United States. Fugitive slave law (1850)
Princeton subject headings:
Fugitive slaves--United States.
Slavery--United States--Controversial literature.
United States.