Structural Weight of Aircraft as Affected by the System of Design
This is a 1924 NACA technical note on aircraft structure, issued by the National Advisory Committee for Aeronautics and preserved in the NASA Technical Reports Server, written for aeronautical engineers weighing airframe design choices. The two plates are black-and-white photographs of numbered truss diagrams, welded tube joints, fittings and couplings. A designer could take from them the lattice logic of braced frames and the sculptural look of machined metal connectors, shown as crisp, evenly lit studio photographs on cream paper.

