See pictures and feel free to ask any questions needed. The three historical 1936 Cloud Country books are in excellent collector condition, with no markings inside or out. The bindings are very solid with some age and wear usage. The March 1936 Aero Digest shows age and usage, and some binding tear, but is in excellent interesting  historical reading condition with no tears or markings inside. The historical May 1938 Airmail Week envelope is also in excellent collector's condition. No refunds or returns unless I've made gross mistake in describing the item.