Riddle Airlines Douglas DC-7C N301G (msn 45062) OAK (Jacques Guillem Collection). Image: 913683. Copyright Photo: Jacques Guillem Collection/AirlinersGallery.com. Framable Color Prints and Posters: Advertisements Share this:EmailFacebookLinkedInTwitterGooglePocketRedditTumblrPinterestLike this:Like Loading... Related Riddle Airlines