Two books: SSV FAM 1 107 Space Shuttle Vehicle Familiarization. Published June, 1981. For basic training. 8 1/2" x 11". Staple bound and 3-hole punched. Clean text. VG+. Space Shuttle Engineering and Operations Support. Orbital Trajectory Data for STS Standard Missions. 48 pages. 8 1/2" x 11". Staple bound and 3-hole punched. Stained cover with yellow marker. Clean text. VG condition. Scarce items.