Two dozen pages of the 1941 screenplay went up for grabs on Saturday (26Apr14) as part of a treasure trove of memorabilia offloaded by the filmmaker's youngest daughter Beatrice and handed to bosses at America's Heritage Auctions.
Another highlight of the event was Welles' old Bell & Howard camera, which he had used to shoot footage of a bullfight in Spain. That sold for $37,500 (£23,438).
A silver-plated ashtray, which was gifted to the director by Ernest Hemingway, was also a big bidding hit, going under the hammer for $5,000 (£3,125).
All 67 lots auctioned, fetched a total of $180,000 (£112,500).