Sfera di Gio: Sacro Bosco
This is an Italian astronomy treatise printed in Siena in 1604 by Francesco Pifferi, an edition of Johannes de Sacrobosco's sphere text for students of cosmography. The four pictures are geometric diagrams of circles, axes and lettered points, drawn with plain fine rules and bold outlines on a cream page. A designer could take their clean, schematic line work and orbit-like compositions as a source for minimal diagram motifs.
