Wissahickon Valley Park Maintenance Center: Site Plan - plumbing, heating, and electrical (PHE-1); Floor Plans - plumbing (P-1); Details - plumbing (P-2); Floor Plan - Power and Lighting - Electrical (E-1); Diagrams and Details - Electrical (E-2); Floor Plans, section - Mechanical (H-1); Site Plan (A-1); Floor Plan, Elevations - section (A-2); Wall Sections, Schedules and Details (A-3). [12 sheets], 1978 May 15, Drawer: W13 and W14, 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/49523 Accessed April 20, 2025.