3 works bound together: Experiments in Aerodynamics. [2], 115 pp. 1891. *
The Internal Work of the Wind. iii, [2], 23 pp. 1893. * Langley Memoir on Mechanical Flight. Part I, 1887 to 1896, by Samuel Pierpont Langley; Part II, 1897 to 1903, by Charles M. Manley. x, [2], 320 pp. 1911. Extensively illustrated with photo plates, plans, diagrams, drawings, etc. 12½x9, cloth, rebacked with original spine cloth laid on, new endpapers.
Three important works by Langley on aerodymanics and flight bound together, with the title-page and binding of Vol. XXVII of the Smithsonian Contributions to Knowledge, 1911, employed. Formerly in the Cooper Union Library, with rubberstamps on the title-page, the backs of many of the plates, etc.