Columbia subject headings:
United States--History--Civil War, 1861-1865--Personal narratives--Confederate.
United States--History--Civil War, 1861-1865--Secret service--Confederate States of America.
Harvard subject headings:
Beall, John Y. (John Yates), 1835-1865--Trials, litigation, etc.
Military courts--United States.
Secret service--Confederate States of America
United States--History--Civil War, 1861-1865--Secret service.
Princeton subject headings:
Military courts--United States.
Secret service--Confederate States of America.