Chart of some early alphabetsVarious ancient alphabets: Coptic, Syriac, Ethioptic, Gothic, and Illyrian (Servian). Hand-colored woodcut of a 19th-century illustration
Leonardo da Vinci sketch for a siege machineMilitary machine for firing arrows with a crossbow, designed by Leonardo da Vinci. Woodcut with a watercolor wash
Leonardo da Vinci drawing of a canal dredgeLeonardo da Vincis drawing of a device for excavating a canal. Woodcut reproduction with a watercolor wash
PART2A-00063Leonardo da Vincis backward handwriting on his design for a lamp using a globe filled with water. 19th-century woodcut reproduction with a watercolor wash
EXPL2A-00168William Clarks sketch of an evergreen shrub leaf in the Lewis and Clark expedition diary, 1806. Hand-colored halftone reproduction of a 19th-century photograph of Clarks handwritten page
EXPL2A-00167William Clarks sketch of Flathead Indians in his diary of the Lewis and Clark expedition, 1804-1806 Hand-colored halftone reproduction of a 19th-century photograph of Clarks handwritten page
EXPL2A-00166William Clarks sketch of a trout in the Lewis and Clark expedition diary. Hand-colored halftone reproduction of a 19th-century photograph of Clarks handwritten page
