Berk?
No. As I noted in the book, Gil Fox found the Hit #17 cover in a garbage can.
Also this: Al Williamson told me he once walked into a room at King Features that was being re-painted, and realized the crew was using Hal Foster's original Prince Valiant pages to catch the excess paint. And Sam Moskowitz exited Hugo Gernsback's office late one night and discovered 13 Frank R. Paul originals, all framed, piled atop another garbage can. "Waiting for Saturday morning pickup," Moskowitz said.
Yes, he salvaged them all.