[Balloon notes]

United States. Army Division of Military Aeronautics · 1917 · 7 pictures

A 1917 technical manual issued by the United States Army Division of Military Aeronautics, held by the Smithsonian Libraries, covering military balloon work for military trainees and engineers. Its pictures are plain line diagrams: a knotted stitch or seam detail, a grid of numbered coordinates, a perspective construction with converging lines, and a grid-of-strength diagram with a bracketed total, offering a designer clean schematic motifs built from grids, lines and labelled arrows.

Balloons · Aeronautics, Military

Internet Archive · Smithsonian Libraries · Public domain (published before 1931) · More from this library