Robert K. Abbett or "Bob Abbett" is a veteran artist who put his distinctive stamp on many a paperback cover during the 50's and 60's before finding success as a nature artist of substantial reputation. His work on the Edgar Rice Burroughs properties in particular are memorable. Here's a gallery of his Barsoom covers and below are his Ballantine covers featuring ERB's most famous hero, the Ape Man himself.
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