00969cam a22002531 4500 s 13000064 DLC 20260227111910.0 850226s1864 dcua 00010 eng s 13000064 //r912 DLC/ICU ICU DLC Q11 .S68 vol. 14 Draper, Henry, 1837-1882. On the construction of a silvered glass telescope, fifteen and a half inches in aperture, and its use in celestial photography. By Henry Draper ... [Washington, Smithsonian institution, 1864] 2 p.l., 55 p. illus., diagrs. 33 cm. Smithsonian contributions to knowledge. [vol. XIV, art. 4] Smithsonian institution publication 180. Astronomy. Reflecting telescopes. Astronomical photography. Smithsonian contributions to knowledge ; v. 14, art. 4. Smithsonian publication ; 180. 52632 52632