West Virginia University, "To be More than Equal: Many Lives of Martin R. Delany"

http://web.archive.org/web/20120424045333/http://www.libraries.wvu.edu...

Rich, detailed site devoted to one of the key figures in the Underground Railroad in western Pennsylvania

Referenced in:
The Struggle Against Slavery: The Abolition Movement and Underground Railroad in Pennsylvania
Abraham Lincoln and the Politics of the Civil War