The Territory of New Mexico before it became a state showing counties, cities, rivers, mountain ranges, and railroads.

New Mexico.

New Mexico.

New Mexico.

New Mexico in 1911.

"New Mexico was ceded to the United States in 1848.

The New Mexico Territory, showing railways and counties.

New Mexico, showing physical features and railway routes.

New Mexico, showing towns, cities, physical features, and railroads.

New Mexico, showing physical features, towns, cities, and railway lines.

New Mexico, showing physical features. Includes military reservation boundaries.

Mexico, showing physical features.

The state of Mexico and its counties.

The timber belts in the Capitan Mountains, New Mexico.

A map from 1903 of the Mississippi Delta region showing the site of New Orleans, Lake Pontchartrain, Lake Borgne, and the course of the Mississippi River through the bird's-foot delta to the Gulf of Mexico.

Use this site to learn the history of the controversial creation of the atomic bomb in the United States. Sound clips from National Public Radio and a photo gallery help to give you a first hand experience of the making of the atomic bomb.

A map of the United States at the time of the Kansas-Nebraska Act (1854) which allowed settlers to determine whether or not slavery would be allowed in their territories. The map is color-coded to show the Free States (including...

A map from 1916 of the Mississippi River Delta from New Orleans and Lake Pontchartrain to the mouth of the river on the Gulf of Mexico. The map shows railroads, swamp lands, navigation lights, and water depths in fathoms. The 3, 10, 20,...

A map of Mexico in 1845, prior to the ceding of the northern territories to the United States in 1846. The map shows the territories of Oregon, Texas, and Central America under Mexican control, and the frontiers of the Missouri and...

A map from 1898 of Mexico, Central America and the West Indies. The map includes an inset map of Cuba and the Isthmus of Nicaragua. "The surface of the Rocky Mountain highland in Mexico is quite similar to that of the great plateau...

A map of Mexico and Texas from the annexation of the Republic of Texas by the United States (1845) to the end of the Mexican-American War (1848). The map is color-coded to show the territory of Texas in 1845, the territory of dispute...

A map of Texas, New Mexico, and northern Mexico showing the principal campaigns and battle sites of the Mexican-American War of 1846-1848.

A map from 1872 of the United States used to illustrate the comparative area sizes of the states to other countries in the world. The map shows state and territory boundaries at the time (Dakota, Montana, Washington, Idaho, Wyoming,...

A map of the territory acquired from Mexico including the annexation of Texas in 1845, California, Utah Territory, and New Mexico Territory in 1848, and the Gadsden Purchase in 1853.