Columbia subject headings:
Harvard subject headings:
Secret societies--United States--History--19th century.
Trials (Treason)--United States
United States--History--Civil War, 1861-1865
United States--History--Civil War, 1861-1865--Societies, etc.
United States--History--Civil War, 1861-1865--Underground movements.
United States--Politics and government--1861-1865.
Princeton subject headings:
Secret societies--United States--History--19th century.
Trials (Treason)--United States.
United States--History--Civil War, 1861-1865--Societies, etc.
United States--History--Civil War, 1861-1865--Underground movements.
United States--Politics and government--1861-1865.