"Plan of the Township of Roxborough with the Property Holders' Names," Manayunk, by John Levering, Surveyor, Published by M. Dripps, Philadelphia, 1848. Photographic print of lithograph [original printed by Wagner and McGuigan] [1 sheet], 1848, Drawer: Wissahickon General, Folder: 3. Wissahickon Valley Park Maps, Plans and Drawings, FP.2011.006. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/49152 Accessed April 20, 2025.