Rivista di astronomia e scienze affini, 1910, a. 4, n. 12 (December)
A December 1910 issue of the Italian astronomy journal Rivista di astronomia e scienze affini, published by the Società astronomica italiana with the Turin observatory, aimed at amateur and professional astronomers. Its pictures are plain line diagrams with labelled rays, lines and points, showing geometric constructions of orbits and paths; a designer could take their clean schematic style and simple diagram vocabulary of arrows, dashed guides and labelled intersections.
