Geschichte der bildenden Künste
A German art history text by Karl Schnaase, published in Düsseldorf in 1843 by J. Buddeus, aimed at readers of architecture and the fine arts. Its two pictures are ground plans of church buildings, drawn in black with dotted outlines and metric scale bars. A designer could take from them the clean architectural plan diagram style, with bold solid masses for walls and piers against fine line work and dotted circulation or vault outlines.
