Columbia subject headings:
African Americans--Colonization--Liberia.
Armstrong, John, active 1850--Trials, litigation, etc.
Gorman, James--Trials, litigation, etc.
Graham, Christopher, active 1850--Trials, litigation, etc.
Slavery--United States--Legal status of slaves in free states.
Strader, Jacob, 1795-1860--Trials, litigation, etc.
United States. Ordinance of 1787.
Harvard subject headings:
African Americans--Colonization--Liberia
Armstrong, John, active 1850--Trials, litigation, etc.
Gorman, James--Trials, litigation, etc.
Graham, Christopher, active 1850--Trials, litigation, etc.
Slavery--United States--Legal status of slaves in free states
Strader, Jacob, 1795-1860--Trials, litigation, etc.
United States. Ordinance of 1787.
Princeton subject headings:
African Americans--Colonization.
Slavery--United States--Legal status of slaves in free states.
United States. Ordinance of 1787