Turtle Anatomy (1821)

Images from Anatome Testudinis Europaeae (1819-21) by the German physician and naturalist Ludwig Heinrich Bojanus (1776–1827). Bojanus was born at Bouxwiller in A…more

Fortification Theory (1600)

Images from Jean Errard’s Fortification Réduicte Art and Démonstrée (Paris, 1600), a seminal work in fortification theory. Errard (1554-1610) was a mathematici…more

Codex Mendoza (1542)

The Codex Mendoza is an Aztec codex, created about twenty years after the Spanish conquest of Mexico with the intent that it be seen by Charles V, the Holy Roman Em…more

Illustrations of Ventilation (1869)

Illustrations showing movement of air through various rooms, from Lectures on Ventilation (1869) by Lewis W. Leeds. The full book can be seen here on Internet Archi…more

Dazzle Ships

Dazzle camouflage (also known as Razzle Dazzle or Dazzle painting) was a military camouflage paint scheme used on ships, extensively during World War I and to a les…more

B. W. Betts’ Geometrical Psychology

Diagrams from Geometrical psychology, or, The science of representation: an abstract of the theories and diagrams of B. W. Betts (1887) by Louisa S. Cook, which det…more

The Beatus of Facundus (1047)

In the 8th century, in a monastery in the mountains of northern Spain, 700 years after the Book of Revelation was written, a monk named Beatus set down to illustrat…more