Contents Include; Cover-Famous Compiler of the First Catalouge of Nebulae and Clusters, Messier and His Catalouge Part I, Some Demonstration for the Classroom, A Small Planetarium in Detroit, Flaming Stars, Back Cover NGC 6618 M17 in Sagittarius, Some wear that is slight, soiling of cover corners and some creasing on cover edge, some soiling on cover, a few small creases to edges, Overall Good Condition!