Plan of the revision of lines and grades of city plan no. 206 bounded by Mermaid Lane, Stenton Avenue, Roumfort Avenue, Ardleigh Street, Gowen Avenue, and Germantown Avenue, 1929 December 16, Drawer: W5 & W6, 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/49257 Accessed January 09, 2026.