A map from 1899 of the United States showing the growth of the nation from the original States in 1783 to the admission of Utah into the Union in 1896. The map shows the Northwest Territory claimed at the end of the American...

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 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 from 1920 of the United States and its territories between 1783 and 1900 showing the nation's expansion and date of acquisition of each new territory or possession. The map is color-coded to show the progression from the original...

A map from 1885 of the United States showing the territorial growth from the original States and the Northwest Territory in 1783 to the Russian cession of Alaska in 1867. The map is color-coded to show the progression from the original...

A map of the United States between 1840 and 1850 showing the states and territories, and the principal routes of transportation and westward migration during the period. The map shows frontier forts, outposts, and settlements, the...

The chief systems of overland travel and communication during the middle nineteenth century including railroads, stage lines, and trails (Oregon Trail, Spanish Trail, Santa Fe Trail, and the Route of the Forty-niners). The system of...

A map of North America showing the foreign possessions in the area of the present United States during the French and Indian Wars (1755-1763) between the French and English. This map is color-coded to show territorial claims at the time...

This resrouce presents instructions for using nine easy to obtain materials for making crystals. The lab takes about 24 hours and it contains a brief explanation of how crystals form.

Very little is known about the natural history of Preble's Shrew, which has been found in widely separate localities in much of the western United States. Specimens have been collected at elevations of 1,280 m in Oregon and 2,750 m in...

A look at the foreign affairs that were dealt with by the Monroe Administration. Read about how the United States gained territory from Spain in Florida, why Russian settlements on the west coast were troubling, and why the Monroe...

Atomic Energy and Nuclear History Online exhibit from Oregon State University Library features information on Atomic Espionage and the Oppenheimer Hearings.

Part of a longer time line describing the history of the American West, this section covers the period 1829 to 1859 with hyperlinks to stories and people of this time period.

Presents information on high quality hunts for big game across the United States. Looks at popularity of the hunt, type of terrain, difficulty level, trophy potential, places to stay, and cost for licenses and tags.

A good overview of the territorial expansion and its results that occurred in the United States over the first half of the 19th century.

Learn more about estuaries when you visit this informative site. This resource provides locations of and weblinks to estuaries in the United States.

Excellent biographical information about this feminist philosopher, but very little information concerning Anne Conway's thought.

This lesson on rational functions has a section on finding the domain which includes an example problem.

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 1903 of Nevada showing counties and county seats, principal cities and towns, mountain ranges, and rivers. "Nevada, one of the most western of the States of the American Union, was formed from a portion of the territory...

A look at graphs of rational expressions, finding properties of the graph by using calculus. Formulas included.

[Free Registration/Login Required] This flipchart is one in a series of flipcharts about the different regions of the US. Facts and links to websites included on the Pacific Region.

Colonel Edward Dickinson Baker (1811 - 1861) who served for the state of Illinois in the U.S. House of Representatives and later as a U.S. Senator from Oregon. Baker served as a colonel during the Mexican-American War and the Civil War...

A map of the western United States and northern Mexico showing the territorial disputes settled and boundary established by the Adams-Onis Treaty between the United States and Spain in 1819. The territorial disputes involved the natural...