Wisconsin Historical Society
American Journeys: Eyewitness Accounts Early American Exploration/settlement
A collaborative project of the Wisconsin Historical Society and National History Day, this site contains over 18,000 pages of primary source, eyewitness accounts of North American exploration starting with the Vikings.
British Library
British Library:northwest Passage: Early Approaches, a Historical Account
Read about the early attempts to find a way through the Northwest Passage. Included are portraits and early maps of the explorers.