Centennial Exposition: Plan and elevation of case for model of Centennial Exposition 1876. Signed by Director of Public Works James H. Windrim; signed by Chief Engineer Samuel S. Smedley. [ID: 12B-597; PWD ERV: 107946; Drawing No.: unknown], 1892 April 7, Drawer: Fa, 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/4894 Accessed November 14, 2026.