Isaac Asimov was an American writer who wrote science fiction and fantasy short stories. His short stories were collected into books that are called bibliographies. A bibliography lists all the books written by a certain author, and in the case of Isaac Asimov's short stories, this includes the stories that he wrote. In all, Isaac Asimov wrote over 500 short stories and they can be found in various bibliographies. You can find these books in most libraries and bookstores. You can also find Isaac Asimov's short stories online, if you search around.