Pittsburgh does not receive as much attention as Philadelphia in terms of Underground Railroad history.  This article offers one of the best overviews of the fugitive aid activities in the state's second largest city. 

This joint project between the Quaker repositories at Haverford and Swarthmore Colleges features online exhibits on Quaker involvement in the American antislavery movements, and includes primary sources, image galleries, interactive maps, a timeline, and scholarly commentary on early Quaker protests, radical Quaker women, the rescue of Jane Johnson, and other subjects. 

A rich on-line exhibit of documents, stories, and images, with video narration that documents the history of slavery and freedom in Pittsburgh from the arrival of African Americans in western Pennsylvania through Reconstruction.