Minnesota Historical Society

Map of regional landscape ecosystems of Minnesota (USGS Northern Prairie Wildlife Research Center)

Minnesota: A History of the Land (College of Natural Resources, University of Minnesota and Minnesota Public Television)

Early Midwestern narratives (American Memory page of the Library of Congress)

Early American travel accounts (American Memory page of the Library of Congress)

American Journeys: Eyewitness Accounts of the Early Explorers (Wisconsin Historical Society)

Early Canadian exploration, travel, and government documents, including many sources for northern Minnesota (Early Canadiana Online)

Digital collection of early fur trade documents (The Champlain Society)

Early French accounts of North America (The Jesuit Relations)

Historical maps online (Perry Casteneda collection, University of Texas at Austin)

Notes from an expedition to locate the source of the Des Moines River (1844 Allen Expedition through Iowa Territory)