Behold, an X-ray of Hitler’s head You're looking at one of five known X-rays of Hitler's head. The radiograph is just one of 17-million rare, intriguing, and often-bizarre items housed in the the U.S. National Library of Medicine, the largest medical library on Earth. We've got a gallery. This particular image is part of a larger medical dossier on Hitler that was assembled by U.S. military intelligence following World War II, and one of the 450 images featured in Hidden Treasure — a book published yesterday in observance of the National Library of Medicine's 175th anniversary. Hitler as Seen by...