Independence Square: Independence Square bound by Chestnut Street, Walnut Street, 6th Street, and 7th Street. Includes Independence Hall, court house, and American Philosophical Society. [ID: 12B-580; PWD ERV: 1075961; Drawing No.: 2508], c. 1890, Drawer: N6, Folder: 1.1. Philadelphia Water Department 12B - Drawings Donation, FP.2019.002. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/4883 Accessed April 20, 2025.