Inspirations for Indiana Jones

From the excellent TheRaider.net, some movies which inspired Indiana Jones:

Zorro Rides Again (1937)
Zorro's Fighting Legion (1939)
Stagecoach (1939)
Gunga Din (1939)
Casablanca (1943)
China (1943)
The Treasure of the Sierra Madre (1948)
The Secret of the Incas (1954)
Valley of the Kings (1954)
Lawrence of Arabia (1962)
MacKenna's Gold (1969)