A biography of the sixteenth-century cartographer Gerardus Mercator, who invented a method of projecting the curvature of the Earth's surface on to a flat sheet of paper.
"A biography of the sixteenth-century Spaniard who explored Florida and other southern states, and became the first white man to cross the Mississippi River."
Presents the biography of the seventeenth-century French explorer who became the first European to travel the entire length of the Mississippi River and claim not only the river but also the land arou
