Wharton Square: Plan of Wharton Square, 36th ward. Department of Public Works and Bureau of Surveys. Includes details of section of granolithic coping surrounding square and plan of opening in the pavement for tree planting. [ID: 12B-568; PWD ERV: 1075972; Drawing No.: 6953], 1896 May, Drawer: N10, Folder: 5.1. Philadelphia Water Department 12B - Drawings Donation, FP.2019.002. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/4872 Accessed June 08, 2025.