Challenge the Hellmaker by Walt and Leigh Richmond
1976. No Edition Stated. 202 pages. Pictorial paper cover. Ace Science Fiction Special 6. Publisher's adverts to rear. All pages and cover have a neat notch cut from the bottom. Text is unaffected. Otherwise, pages have slight foxing, tanning and minor thumbing. Notched cover. Paper cover has slight marks, creases, some sunning and modest edge wear. Price sticker to front.