Are you a history buff? Do stories about the Underground Railroad peak your interest? http://Visitphilly.com has put together an incredibly easy-to-follow guide to Underground Railroad sites in the city. Areas of interest are clearly summarized, and a city map indicates the location of each site. Historical markers have not been neglected either. A list of their locations and the events or places they commemorate can be found on this site as well.
Studying a topic can be frustrating and time-consuming, but this article takes the work out of researching the Underground Railroad in Philadelphia. Thank you to those who did the digging for us and made this information easy to find!