Benjamin Franklin Parkway: Proposal for the Architectural and Landscape Development of the Parkway at the Philadelphia Museum of Art and of Areas Adjacent to the New Spring Garden Bridge, 1965, Shelf: 14. Technical Reports, Manuals, Specs and Studies, FP.2010.001.004. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/396628 Accessed April 20, 2025.