This is the tour book from the National Air and Space Museum at the Smithsonian Institution in Washington, D.C. This museum houses a fine collection of historically significant aircraft from the beginning of aviation early in the 20th Century up until modern days. My personal favorite is the “Spirit of St. Louis,” which marked the first solo flight across the Atlantic. Many fine airplanes are featured in this tour book. You don’t have to be a WW I enthusiast to enjoy it.