Columbia subject headings:
Alert (Ship)
Arctic regions--Discovery and exploration--British.
Discovery (Ship)
Natural history--Arctic regions.
Harvard subject headings:
Alert (Sloop : 1856-1895)
Arctic regions--Discovery and exploration--British.
Arctic regions.
Discovery (Ship)
Natural history--Arctic regions
Sailing
Princeton subject headings:
Alert (Sloop : 1856-1895)
Arctic regions--Discovery and exploration--British.
Discovery (Ship)
Natural history--Arctic regions.