Columbia subject headings:
Antarctica--Discovery and exploration--Irish.
Arctic regions--Discovery and exploration--Irish.
Explorers--Ireland--Biography.
Harvard subject headings:
Antarctica--Discovery and exploration--Irish.
Arctic regions--Discovery and exploration--Irish.
Explorers--Ireland--Biography.
Princeton subject headings:
Antarctica--Discovery and exploration--Irish.
Arctic regions--Discovery and exploration--Irish.
Explorers--Ireland--Biography.