Portion of the plan for widening Ridge Ave on the Southwesterly side from the Wissahickon Dr to a point approximately 350' Northwesterly from the Wissahickon Dr, and the revision of lines and grades of intersecting and adjacent streets thereby. [1 sheet], 1950 June 5, Drawer: W23 & W24, Folder: 5. Wissahickon Valley Park Maps, Plans and Drawings, FP.2011.006. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/49962 Accessed April 20, 2025.