“Looking through PW’s archives at the top 25 bestselling books of both 1992 and 1982 in fiction and nonfiction (100 titles total), we found 56 books that had Kindle e-book editions. Between fiction and nonfiction, the former fared much better: 39 of the 50 fiction titles had e-book editions, compared to 17 of the 50 nonfiction titles.”