Rivista di astronomia e scienze affini, 1913, a. 7, n. 04 (April)
This Italian periodical from 1913, issued by the Società astronomica italiana with the Turin observatory's library, was a monthly astronomy journal for amateur and professional readers. Its pictures are plain catalogue-style engravings of telescopes, mounts and cases, showing how instruments were drawn for trade advertising, which a designer might take as a model for clear product illustration with minimal shading.
