The book contains over 15 schematics of spacecraft systems including communications, electrical, environmental control, space suit and cabin, and reaction control. Used by the Apollo 7 crew during flight. INSCRIBED AND SIGNED BY WALT CUNNINGHAM on the cover: "My personal copy, Flown on Apollo 7, Walt Cunningham". [With:] Typed letter signed by Cunningham (2)" /> FLOWN Systems Data Book from Apollo 7. <I>Approx. 8 x 10 in., expanding to 296 in. [over 24 feet]. Outer cover label reads: "AS 205/101, SYSTEMS DATA, Part No. SKB 32100036-201, S/N 1002."</I> The book contains over 15 schematics of spacecraft systems including communications, electrical, environmental control, space suit and cabin, and reaction control. Used by the Apollo 7 crew during flight. INSCRIBED AND SIGNED BY WALT CUNNINGHAM on the cover: "My personal copy, Flown on Apollo 7, Walt Cunningham". [With:] Typed letter signed by Cunningham (2) | Christie's