Columbia subject headings:
Cotton trade--New Hampshire--Portsmouth Region--History.
Ship captains--New Hampshire--Portsmouth Region--History.
Shipping--New Hampshire--Portsmouth Region--History.
Ships--New Hampshire--Portsmouth Region--History.
Harvard subject headings:
Cotton trade--New Hampshire--Portsmouth Region--History.
Ship captains--New Hampshire--Portsmouth Region--History.
Shipping--New Hampshire--Portsmouth Region--History.
Ships--New Hampshire--Portsmouth Region--History.
Princeton subject headings:
Cotton trade--New Hampshire--Portsmouth Region--History.
Ship captains--New Hampshire--Portsmouth Region--History.
Shipping--New Hampshire--Portsmouth Region--History.
Ships--New Hampshire--Portsmouth Region--History.