Columbia subject headings:
Massachusetts--Politics and government--1861-1865.
Secession.
Slavery--United States--Fugitive slaves.
United States--Politics and government--1857-1861.
Harvard subject headings:
Fugitive slaves--United States
Massachusetts--Politics and government--1861-1865.
Personal liberty laws.
Secession.
Slavery--United States
United States--Politics and government--1857-1861.
United States. Fugitive slave law (1850)
Princeton subject headings:
Fugitive slaves--United States.
Massachusetts--Politics and government--1861-1865.
Personal liberty laws.
Secession.
United States--Politics and government--1857-1861.
United States.