Which famous 20th century American author served as a brand ambassador for Pan American Airways in the 1940s, writing promotional travel essays after being hired to improve the airline's literary reputation?

Throughout history, many renowned authors have lent their names and reputations to product endorsements, creating fascinating intersections between literature and commerce. Some of these partnerships became iconic, while others were short-lived curiosities. Test your knowledge of these unique literary brand ambassadorships that crossed the boundary between artistic creation and commercial promotion.

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Ernest Hemingway
F. Scott Fitzgerald
John Steinbeck
William Faulkner