Columbia subject headings:
Challenge (Clipper)
Clipper ships--United States--History--19th century.
Voyages to the Pacific coast.
Harvard subject headings:
Challenge (Clipper)
Clipper ships--United States--History--19th century.
Voyages to the Pacific coast.
Princeton subject headings:
Challenge (Clipper)
Clipper ships--United States--History--19th century.
Voyages to the Pacific coast.