Columbia subject headings:
City of Cairo (Ship)
Steamboat disasters--Atlantic Ocean.
Survival.
World War, 1939-1945--Naval operations, German.
World War, 1939-1945--Naval operations--Submarine.
Harvard subject headings:
City of Cairo (Ship)
Shipwreck survival--Atlantic Ocean.
Steamboat disasters--Atlantic Ocean.
World War, 1939-1945--Naval operations, German.
World War, 1939-1945--Naval operations--Submarine.
Princeton subject headings:
City of Cairo (Ship)
Steamboat disasters--Atlantic Ocean.
Survival after airplane accidents, shipwrecks, etc.
World War, 1939-1945--Naval operations, German.
World War, 1939-1945--Naval operations--Submarine.