ON THE CONSTRUCTION OF A SILVERED GLASS TELESCOPE, FIFTEEN AND A HALF INCHES IN APERTURE, AND ITS USE IN CELESTIAL PHOTOGRAPHY, BY HENRY DRAPER AND, ON THE MODERN REFLECTING TELESCOPE AND THE MAKING AND TESTING OF OPTICAL MIRRORS, BY GEORGE W. RITCHEY. by Draper, Henry ; Ritchey, George W - 1904

Washington: Smithsonian Institution. Very Good+. 1904. First Edition Thus. Wrappers. Smithsonian Contributions to Knowledge, Vol. 34; [Art. 2] Smithsonian Institution Publicaton 1459.; Folio 13" - 23" tall; 109, [12] pages; Printed tan wrappers. Extremities are ever so slightly trimmed. Head and heel of paper spine ever so slightly chipped. Description : 3 pages, leaf, iii, 55, v, 51 pages, Illustrations, XIII plates. On the Construction of a Silvered Glass Telescope, Fifteen and a Half Inches in Aperture, and its Use in Celestial Photography, by Henry Draper is reprinted from vol xiv, "Smithsonian Contributions to Knowledge," 1864) .