I read that he never edited his books. He just wrote it and submitted it without rereading. It's just amazing to me that he could keep all those facts straight in his head without going back over them to make the mysteries work.

They reprinted quite a few of them when the tv show came out, so I've got most of those versions. My local library had a few too, which is rare for them since they usually have nothing that I would ever want to read. Plus the evil librarian glares at you all the time you're there.