An orographical map from 1906 of the United States showing terrain features including mountain systems, plateaus and slopes, watersheds, lakes, and rivers. The map is color-coded to show land elevations from sea level to over 10,000 feet.

A commercial map from 1872 of the United States showing the principal railroad and steamship routes in the region at the time. The map shows state boundaries and capitals, major cities and ports, submarine telegraph cables to Europe,...

A map of the United States in 1821 showing the states and territories which either accepted or abolished slavery after the Missouri Compromise of 1820. The map is color-coded to show absolutely free states, states undergoing gradual...

A map of the United States in 1861 after the secession of the Southern States. The map is color-coded to show the Free Union States, Union Slaveholding States, Confederate States, and the territories of Washington, Dakota, Nevada, Utah,...

A map of the United States in 1850, showing the frontier line, indicate by the thick black line. The map shows the States added to the Union between 1840 and 1850, including Florida (1845), Texas (1845), Iowa (1846), Wisconsin (1848),...

A map of the United States in 1800 showing the territorial claims of the states at the time, the British and French possessions, and territory disputes. The map shows the frontier lines or extent of settlement from the coast of Maine to...

A map of the United States at the time of the passing of the Compromise of 1850 (September, 1850). This compromise was a series of bills attempting to resolve territorial and slavery issues raised by the Missouri Compromise (1820) and...

A map of the United States in 1830 showing the states and territories, the joint-occupation with Britain in Oregon Country, and the British and Spanish possessions at the time. The map shows the westward expansion of the United States,...

A map of the United States in 1840, showing the frontier line, indicate by the thick black line.

A map of the United States at the close of the American Revolutionary War (1783) showing the newly formed States, and their claims to the lands west of the Allegheny Mountains to the Mississippi River. The map notes that the territory...

A map of the United States in 1860 showing the states and territory boundaries at the time, and is color-coded to show the slave States and distribution of slaves, the free states, and the territories, all open to slavery under the...

A map of the United States and territories showing the westward expansion after the Missouri Compromise (1820) and the admission of Missouri into the Union in 1821.

A map of the United States in 1800 showing the original thirteen states with the additions of Vermont (1791), Kentucky (1792), and Tennessee (1796), the State claims to western lands by South Carolina and Georgia, the extent of the...

A political map of the United States of America.

A map of the United States in 1803 showing the extent of the territory after the Louisiana Purchase from France. The map is color-coded to show the possessions of the United States, Great Britain, and Spain at the time, and shows the...

A map of the United States in 1821 showing the extent of the territory after taking control of Florida from Spain. The map is color-coded to show the possessions of the United States, Great Britain, and Spain at the time, and shows the...

A map of the United States showing the growth of the nation from 1776-1867. The map is color-coded to show the thirteen original states, the territory acquired by conquest during the revolution and the Treaty of 1783, the Louisiana...

A map of the United States in 1801 showing the extent of the territory at the time of the presidency of Thomas Jefferson. The map is color-coded to show the possessions of the United States, Great Britain, Spain, and France at the time,...

A map of the United States showing the growth of the nation from 1783-1867. The map is color-coded to show the thirteen original states, the territory acquired by conquest during the revolution and the Treaty of 1783, the Louisiana...

A map of the United States showing the territorial growth from 1783 to 1790. The map is color-coded to show the original territory after the American Revolutionary War, the Northwest Territory north of the Ohio River in 1787, the...

A map from 1899 of the United States showing the physical features of the area, including mountain systems and highlands, plateaus, basins, plains, lakes, rivers, and coastal features. This map also shows the six conventional state...

A map from 1900 of the United States showing the territorial expansion from the original Thirteen Colonies to the states and territories of 1900. The map is color-coded to show the original states, states admitted between 1791 and 1860,...

A map from 1890 of the United States showing the territorial expansion from the original Thirteen Colonies to the states and territories of 1890. This map shows state capitals, railroads, lakes, and rivers. The map is color-coded to show...

A relief map from 1897 of the United States showing the mountain systems and highlands, plateaus, basins, plains, lakes, river systems, and coastal features.