Curated OER
Educational Technology Clearinghouse: Maps Etc: United States, 1917
A map of the United States and territories showing the expansion from the formation of the original states to the purchase of the Danish West Indies (Virgin Islands) in 1917. The map is color-coded to show the original states, the states...
Curated OER
Etc: Development of Amer Interests in the Pacific, 1791 1903
A map of the United States and Pacific Ocean showing the development of American interests in the Pacific from the early exploration of Oregon Country in 1791 to the formal annexation of the Midway Islands and the Panama Strip in 1903....