About the Author

Hidden City Staff This article was produced in collaboration with the Historical Society of Pennsylvania and written by Patrick Glennon. Located at 1300 Locust Street and open to the public Tuesdays through Fridays, HSP is one of the nation’s largest archives of historical documents, with over 21 million manuscripts, books, and graphic images encompassing centuries of US history. Find upcoming public programs, start your own research project, and learn more about HSP.