Charles Darwin and the Theory of Evolution by Natural Selection
Authors of the Medieval and Renaissance Eras: 1100 to 1660
Authors of The Enlightenment: 1660 to 1800
Voices of Victorian England: Contemporary Accounts of Daily Life
Authors of the Early to mid-20th Century
The Sun-Centered Universe and Nicolaus Copernicus
Warfare in the Roman Republic: From the Etruscan Wars to the Battle of Actium
Johannes Kepler and the Three Laws of Planetary Motion
America in the Cold War: A Reference Guide