Callahan’s KeyBy Spider Robinson; Read by Barrett Whitener9 Cassettes – Approx 12.5 HoursPublisher: Blackstone AudioPublished: 2003ISBN: 0786125519Themes: / Science Fiction / Humor / Callahan’s Place / Florida / Nikola Tesla / Robert A. Heinlein / NASA / The universe is… Read moreReview of Callahan’s Key by Spider Robinson