Curated OER
Etc: Maps Etc: The United States After the Louisiana Purchase, 1803
A base map showing the extent of the United States after the purchase of the Louisiana territory from France in 1803.
Curated OER
Etc: Principal Routes of Trade and Migration, 1840 1850
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...