Library of Congress
Loc: Discovery and Exploration
This American Memory site documents the discovery and exploration of the Americas with both manuscripts and published maps, many of which date from the European Age of Discovery. The site includes 22 map titles and descriptions, as well...
Harvard University
Open Collections Program: Expeditions and Discoveries: Modern Age
An inclusive collection of maps, field notes, photos and letters of Harvard sponsored explorations and discoveries during the 19th and 20th centuries.