In the 80s, he used to go into bookstores and sign copies of his books on their shelves (with permission, the bigger stores put an "author signed" sticker on th

In the 80s, he used to go into bookstores and sign copies of his books on their shelves (with permission, the bigger stores put an "author signed" sticker on them). Not as an event, just as a treat for the next person to buy one of his books; when he happened to be in the store. Always thought that was a particularly nice gesture.