Letter from the General Superintendent of the Philadelphia and Reading Railway Company to David Sellers relative to additional track from Fountain Green to Columbia Bridge, 1898 April 7, Drawer: 8.3. History Files, FP.2010.001.006. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/405871 Accessed April 20, 2025.