This site is a very simple overview of plate tectonics. It includes a map of all the major plates and a diagram of the layers of the earth.

This is a highly detailed map of the Nile River basin from the Tropic of Cancer south to the river's source at Victoria Nyanza (Lake Victoria). This map shows both the Blue Nile and White Nile river systems in 1903. Major cities, trade...

A map of the Mediterranean Sea region showing the Barbary States and southern Europe at the time of the Tripolitan War (First Barbary War - 1801-1804) between the United States and the North African Ottoman Empire regencies. The map...