Variant cover for DK's Houdini photo biography

I’ve just discovered this copy of DK’s photographic biography of Houdini by Vicki Cobb with a different cover. All other copies I’ve seen feature a photo of Houdini in the Siberian transport wrist chain, but this cover shows him suspended over the NYC subway construction site having just freed himself from a straight jacket.

As this is a 6th edition (ISBN 9780756642563),  so it’s possible DK changed the art at some point after the 1st edition. But it is also possible DK has been offering this alternate cover art from the start (as I’ve seen them do with other titles). Could there be more?

I don’t have the answer, but I’m pleased to have nabbed this edition for the collection.