210 pp, textured composition binding, medium blu, dark blu lettering on spine & front cover logo w/Tom's head superimposed over a blueprint, blu-wht illustrated endpapers w/Tom looking out the window at a spaceship. Dj white coated paper w/color illustration encompassing the front & spine. Spine has color logo of Tom's head superimposed over a blueprint. dj back panel blu-black w/listing of 7 Tom Swift books. Mattson 58600-6, format #1, Book #6 in the Tom Swift, Jr. adventure series. A space station 22,300 miles above earth is Tom's latest project. His plans list twelve laboratories but the project is beset from the start by a fiendish enemy and also by the phantom of outer space, Zero Gravity. remnants of price sticker on front flap.