A genuine U.S. Navy Vietnam War era pack of recognition study cards. This pack was made in the late 60's by the U.S. navy for pilots to use as aircraft identification & training, this pocket sized pack is complete with all 54 cards that shows silhouettes of planes and basic details one side, and on the other side a b/w picture of the aircraft. It covers various aircrafts from countries like the U.S., U.S.S.R, China, France & UK.