The writer Ray Bradbury, science fiction expert Forry Ackerman, and special effects genius Ray Harryhausen are world-famous for their careers involving tales of the imagination. Before anyone had heard of them, they were friends as teens and college-aged boys enjoying all that 1930s L.A. had to offer: getting celebrity autographs, watching blockbuster movies, and haunting dozens of bookstores. As members of the Los Angeles chapter of the Science...