A map from 1885 of North America and Central America showing the major relief features of the region. The map shows the primary highland known as the Pacific Highland, with the Sierra Nevada and Rocky Mountains, the secondary highlands...

A relief map from 1890 of North America, Central America, Greenland, and the Caribbean to Puerto Rico showing the general mountain systems, highlands, and plains of the region. Major river systems are shown. "North America is the third...

A map from 1906 of North America showing the mean annual isotherms of the region given in degrees Fahrenheit. "The climate of North America naturally varies greatly, depending on latitude, the general atmospheric circulation or direction...

A map from 1901 of South America showing the physical features of the region. This map is color-coded to show general elevations from sea level to over 6,500 feet, mountain systems, drainage divides, lakes, rivers, coastal features, and...

A map of the United States showing the principal trade and westward migration routes between 1840 and 1850. The map shows state and territory boundaries at the time, major cities, ports, outposts, forts, and settlements, rivers, mountain...