Reber, Major Samuel, Signal Corps, U.S. Army. An Outline of the Theory of Ballooning, A Lecture Delivered at the Army Signal Station (Balloon School), Fort Omaha, May 27, 1912. Reprinted from the Journal of the Franklin Institute, Oct 1912. 32 pages, illus with tables and graphs, wrps, Sm 4to (6x9"). Boldly inscribed and signed by the author with his initials at the top of the front cover. Good-Very Good, light cover toning. A very early and important ballooning document.