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
Draper's work reprinted from vol. XIV, "Smithsonian contributions to knowledge," 1864.
Binding notes
With: A continuous record of atmospheric nucleation / Carl Barus. Washington : Smithsonian Institution, 1905 -- Glaciers of the Canadian Rockies and Selkirks / William Hittell Sherzer. Washington : Smithsonian Institution, 1907.