Which renowned 20th century American author famously endorsed Parker Pens in the 1930s, claiming the pen was essential to his writing process and appeared in advertisements saying 'It writes as I think'?

Throughout literary history, famous authors have occasionally lent their names and reputations to endorse products, creating fascinating intersections between literature and commerce. Some of these partnerships became legendary, while others were short-lived curiosities. Test your knowledge of these unique literary brand endorsements that connected the world of books with consumer products.

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Ernest Hemingway
F. Scott Fitzgerald
William Faulkner
John Steinbeck