Columbia subject headings:
Maritime law--United States.
Merchant marine--United States.
World War, 1914-1918--Law and legislation--United States.
Harvard subject headings:
Maritime law--United States.
Merchant marine--United States
World War, 1914-1918--Law and legislation--United States
Princeton subject headings:
Maritime law--United States.
Merchant marine--United States.
World War, 1914-1918--Law and legislation--United States.