Columbia subject headings:
Harvard subject headings:
Sims, William Sowden, 1858-1936.
United States. Navy--History--World War, 1914-1918.
World War, 1914-1918--Naval operations, American
World War, 1914-1918--Naval operations--Submarine
World War, 1914-1918--Personal narratives, American
Princeton subject headings:
Sims, William Sowden, 1858-1936.
United States. Navy--History--World War, 1914-1918.
World War, 1914-1918--Naval operations, American.
World War, 1914-1918--Naval operations--Submarine.
World War, 1914-1918--Personal narratives, American.