Columbia subject headings:
Antarctica--Discovery and exploration--British.
Arctic regions--Discovery and exploration--British.
Explorers--Canada--Biography.
Explorers--Great Britain--Biography.
Northwest Passage.
Ross, James Clark, Sir, 1800-1862.
Ross, John, Sir, 1777-1856.
Harvard subject headings:
Explorers--Canada--Biography
Explorers--Great Britain--Biography
Northwest Passage.
Polar regions--Discovery and exploration--British.
Ross, James Clark, Sir, 1800-1862.
Ross, John, Sir, 1777-1856.
Princeton subject headings:
Antarctica--Discovery and exploration--British.
Arctic regions--Discovery and exploration--British.
Explorers--Canada--Biography.
Explorers--Great Britain--Biography.
Northwest Passage.
Ross, James Clark, Sir, 1800-1862.
Ross, John, Sir, 1777-1856.