This site features articles and extracts from documents about early US radio history.

United States Early Radio History

This Center has a wonderful set of bibliographies and source documents (available online) on the slave trade.

Gilder Lehrman Center for the Study of Slavery, Resistance, and Abolition: Home

This is a great find. It has maps of the Mid-Atlantic region of the United States up through 1850, and includes nautical maps, New York communities and neighborhoods, and other examples.

American Shores - Maps of the Middle Atlantic Region to 1850

This web site seems to be British-oriented and covers a lot of ground from hominid sites to Cambodia.

Archaeology Today

This site is about prehistoric archaeology done in Poland from 1989-1994.
Archaeological Research at Oslonki, Poland

Here is a report on the Angra Bay shipwrecks (Azores, 1996-1998).

Angra Wrecks