Softcover. Chicago, Swift's Premium, 1st, 1958, Book: Very Good, Dust Jacket: None, Swift's Space Travel Guide - Cardboard Space Travel calculator wheel features information about planets: Jupiter, Mars, Moon, Earth, Venus, Mercury, Pluto, Neptune, Uranus, and Saturn. Information includes: Astronomical sign, Maximum surface temperature, Distance from Earth at closest approach, Length of year, and Mean diameter of planets in miles. Light wear.
 "Swift's Space Travel Guide Swift's Premium")
