Set of six 7x9" folding route maps bound in stiff card covers. Various paginations 4-16pp, mostly color low-level maps. I believe the 337th Bomb Sqdn, a unit in the 96th Bomb Wing, was stationed at Dyess AFB, Abilene, TX. Some booklets have additional flight information (radio freq, emergency airfields, special operating procedures) pasted inside front cover. The booklets date from 1986-87; one is for Red Flag which usually originates from Nellis AFB, Nevada. A great group for armchair flying!