Bookslut pointed me to an interesting article in The Guardian on movie posters as cover art.
"It’s a no-brainer. You’d be crazy not to do it," says Marcella
Edwards, senior commissioning editor at Penguin Classics. The sales
surges that come with a film or TV tie-in book cover are irrefutable.[…]The film or TV tie-in cover, which generally lasts for around three
months (the life of the film, and sometimes the DVD), often running
alongside the original paperback design, is an ever-growing trend in
publishing. "It’s happening more and more often," says Edwards.
"Publishers have got wiser. You’d be stupid if you didn’t do it."[…]Film tie-in covers might be glossy and glittering and force a surge in
sales, but they are truly the Ivana Trumps of the book jacket world.
Peter Allen was right…. “Everything Old Is New Again”…..
The movie poster as tie-in cover was standard back in the 60’s and 70’s.