Fahrenheit 451 might be the most famous book about book-burning ever written, and its author, Ray Bradbury, has long insisted that it only be available as a print book, on paper.

So what changed? Bradbury’s agent, Michael Congdon, told the Associated Press that the publishing rights to Bradbury’s most famous novel were expiring — and it was impossible to strike a new deal with publishers that didn’t include ebook rights. Eight different publishers were interested, but nobody would do it without an electronic edition. Condgon explained the situation to Bradbury, and he finally gave in.