Third printing 1968. 4th volume of the Macmillan Sky and Telescope Library of Astronomy. Hardcover with dust jacket. 9 x 6 x 1.25 inches. weighs 1 lb. 9 oz..Covers not only the entire history of telescopes and telescope making, but includes comprehensible and detailed accounts of the methods and materials necessary for the construction of a variety of different telescopes, with evaluations of their relative merits, step-by-step insturctions for construction, adjustment, and use, advice on purchase and quality, testing accuracy, analysis of observations, and discussion of signific ant data that the amateur observer can contribute through the societies of "star-gazers" organized around the world.