League Island Park: The accepted design for the development of League Island Park. Reduced from the 50 foot drawing by the Department of Public Works and Bureau of Surveys. Signed by Chief Engineer George S. Webster. [ID: 12B-559; PWD ERV: 1075981; Drawing No.: 7398], 1899 April, Drawer: FDR-2, Folder: 2.1. Philadelphia Water Department 12B - Drawings Donation, FP.2019.002. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/4863 Accessed April 20, 2025.