After crashing in the 1950s, the paperback market surged back less than a decade later when college students turned Ballantine’s paperback editions of The Lord of the Rings into a zeitgeist-sized hit. Bantam Books reprinted pulp adventures of Doc Savage from the ’30s and ’40s, adding lush, photorealistic, fully painted covers by James Bama. And there was an early-’60s “Burroughs Boom” when publishers discovered that twenty-eight of Edgar Rice Burroughs’s books had fallen into the public domain.