Dynamical Stability of Aeroplanes.
Washington DC: The Smithsonian Institution, 1916. 8vo. 80 pp. Spine ends and corners are lightly bumped and rubbed, paper at spine ends frayed. Otherwise book is in excellent condition. From the Smithsonian Miscellaneous Collections, Volume 62, Number 5. With three plates. Very Good Paperback (Item ID: 69872)