M. Vitrvvivs De architectura
Vitruvius's De architectura, printed in 1511 and held by Heidelberg University Library, is a Renaissance printed treatise on architecture, drawn from the Cicognara collection's Italian architectural books. The pages show plans and diagrams: a circular floor plan with radiating marks, a colonnade elevation of columns on bases, a set of stepped and lattice-like forms, and a large theatre plan with tiered seating, all drawn in clean black linework that suggests a model for schematic architectural diagrams.
