The Pure Oil Company came out with a series of 3 books call "Cloud Country" Book 1, 2, and 3 on "How to fly an airplane." These do surface every once in a while, they are thin hardbound books and light blue in color. If you have one for sale please text Goober at 330-428-1125
Hey thank you Gulfiend, the next time I find a cool Gulf item Ill send you a message! Please let me know what you need. I can get tons of Gulf items from an old collection here in Ohio.