This private collection presents more than 15,800 rare historical maps with a focus on North and South America. The collection is accessible via several formats. A standard browser (the "directory") is designed for use by the general public. In addition to two browsers and a "collections ticker" requiring Insight software (available for free download), a GIS browser shows detailed overlays of maps and geospatial data for the more serious researcher.

Many of the U.S. maps are from the late 19th and early 20th centuries and are often notable for their craftsmanship. Materials include atlases, globes, books, maritime charts, pocket and wall maps, and children's maps. Users can zoom in to view details. Overlay capabilities make this site valuable for its ability to convey how locations have changed over time.

These 14 exhibitions include more than 600 maps and related documents on aspects of history revealed through the study of maps. The website provides well-integrated essays of up to 8,000 words for each exhibit and some annotated bibliographies.

Exhibits focusing on American history include "Mapping the Republic," on conflicting conceptualizations of the U.S. from 1790 to 1900; "Exodus and Exiles," on Diaspora experiences of Jews and African Americans; "The American Way," a collection of 20th-century road maps and guidebooks; "Carto-Maine-ia," on popular uses of maps; and "Maine Wilderness Transformed," that examines "the creation of a landscape of exploitation."

In addition, "The Cartographic Creation of New England," addresses European exploration and settlement, "The 'Percy Map,'" presents a significant Revolutionary War map; and "John Mitchell's Map" offers insight into diplomatic disputes. These maps are especially valuable for studying exploration and cartography in American history.

By the time Thomas Jefferson became the third President of the United States in 1801, interest in exploring the West had begun to shape U.S. policy. This chronological narrative traces Jefferson's life, participation in politics, and accumulation of scientific geographical knowledge from 1735 to 1804. There are four main sections: "The Jeffersons and Their Frontier Virginia Neighborhood," "From Colony to Commonwealth," "Science and Statecraft at Home and Abroad," and "Public Servant to the Early Republic."

This narrative is accompanied by an archive of 169 letters, statues, books, treaties, maps, and journals providing primary source insight into Jefferson's thoughts about the West and the Lewis and Clark expedition in particular. Three interactive maps from the 1700s, overlaid with historical data about cities, private dwellings, natural features, courthouses, and waterways, provide important insight into the geographic and social environment at the time.

A collection of historical and modern maps, this site features more than 150 maps showing early exploration and subsequent land use. The maps show a variety of information, including landscape changes over time, natural and man-made features, recreation and wilderness areas, geologic features, topography, wetlands, vegetation, and wildlife. A series of conservation maps focuses especially on the growth and development of national parks.

The maps have been categorized by purpose, and fit into one of seven categories: Conservation and Environment, Discovery and Exploration, Immigration and Settlement, Military Battles and Campaigns, Transportation and Communication, Cities and Towns, and General Maps.

This website offers more than 400 images of historic maps charting 400 years of development in Illinois and the northwest territory. The collection of maps can be browsed by state or geographic area or by categories such as early maps, topographic maps of Illinois, Indians of North America, waterways, and transportation. Types of maps include maps showing roads and canals, topographical maps, French and Spanish colonial maps, maps of railways, city maps, county and township maps, maps showing regions of settlement, and sectional state maps.

A zoom and pan feature allows the map images to be examined in detail and bibliographic information is provided with each map image. A keyword search is available. An excellent source of historic maps.

This large collection of maps from the 16th century to the present day focuses on Americana and cartographic treasures.

Materials are organized into seven thematic categories—Cities and Towns, Conservation and Environment, Discovery and Exploration, Cultural Landscapes, Military Battles and Campaigns, Transportation and Communication, and General Maps. Sections include five special presentations.

Users may download maps or zoom in to view details. Seventeen specific map collections contained within this larger site that are of particular importance for the study of American history include "Discovery and Exploration," "The American Revolution and Its Era," "Railroad Maps, 1828–1900," "American Colonization Society Collection: Maps of Liberia, 1830–1870," "Panoramic Maps, 1847–1929," "Civil War Maps," and "Mapping the National Parks."