With an introd. by Eric Partridge. With an introd. by Martin Gardner. With an introd. by Lord Horder. With an introd. by George Sherburn. With an introd. by Alfred Kazin. with an introd. by Viola Meynell. With an introd. by Pierre Chevenard. With an introd. by Cyril Hinshelwood. With an introd. by Wernher von Braun. With an introd. by Frank Wells.