[O]ver several days in 1978, George Lucas, Steven Spielberg, and the screenwriter Lawrence Kasdan worked through an idea Lucas had for a film called “Raiders of the Lost Ark,” and they recorded the sessions. And there’s a transcript. And it’s online.
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As the men hash out the Jones iconography, they refer, incessantly, to other films, invoking Eastwood, Bond, and Mifune. He will dress like Bogart in “The Treasure of the Sierra Madre,” Lucas says: “the khaki pants…the leather jacket. That sort of felt hat.” Oh, and also? “A bullwhip.” He’ll carry it “rolled up,” Lucas continues. “Like a snake that’s coiled up behind him.”
“I like that,” Spielberg says. “The doctor with the bullwhip.”