Author J K Rowling wrote the final chapter of the last Harry Potter book in "something like 1990", seven years before the release of the first book.
7
Critic Michael Crowley gave such a poor review of one of author Michael Crichton's books that, in his next book, Crichton made a character 'Mick Crowley' who was a child molester with a small penis.
18
Ernest Vincent Wright wrote a 50,000 word book titled 'Gadsby' which did not use the letter "e".
10
The Main Library at Indiana University sinks over an inch every year because when it was built, engineers failed to take into account the weight of all the books that would occupy the building.
240
There is a 600 year old 240 paged book called the Voynich Manuscript, that’s written language is still completely unknown today.
15