Columbia subject headings:
Harvard subject headings:
Bombings--England--History--19th century.
Canada--History--Fenian Invasions, 1866-1870.
Fenians--History.
Le Caron, Henri, 1841-1894.
Spies--Great Britain--Biography.
Princeton subject headings:
Bombings--England--History--19th century.
Canada--History--Fenian Invasions, 1866-1870.
Fenians--History.
Le Caron, Henri, 1841-1894.
Spies--Great Britain--Biography.