Henrici Glareani Helvetii, poetae laureati de geographia liber unus,
Henrici Glareani's Latin treatise on geography, printed at Freiburg im Breisgau in 1539 by Johannes Faber Emmeus and written by the Swiss-born poet Glareanus for scholars and students. The pictures are plain line diagrams of a semicircle, a circle divided by crossed axes, vertical measuring lines under an arc, and radiating rays from a centre point, set in lettered labels; a designer might borrow their schematic clarity for technical charts, compass-style graphics, or minimalist instructional layouts.
