Three hardcover books, each signed on opening pages by an inventor: The Great American Chewing Gum Book, signed by Walter E. Diemer (considered to be the inventor of bubblegum); Something New Under the Sun, signed by Harold Rosen (satellite technology) and Deborah Castleman, inscribed by both; and The Making of the Pacemaker, signed and dated by Wilson Greatbatch (inventor of the implantable pacemaker). A few tears, surface rubbing and some wear, otherwise fine overall condition. RRAuction COA.
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