History 

Historical Maps
Library of Congress:  Military Campaign Maps
Nobel e-museum: Conflict Map
Civil War Maps
Journey Through Hallowed Ground

Primary Source Material
American Women's History: A Resource Guide
Aquifer American Social History Online
Civil War Women
Eyewitness to History  
Indian People of the Northern Great Plains
The Library of Congress: American Memory
Making of America/Cornell University Library
Our Documents 
Primary Sources and Activities
History Matters: Many Lives
World Digital Library International Primary Sources
Women's History
Women Working