#C-MH-04 (Centennial Exhibition. Machinery Hall); ID: 1653: Set of Machinery Hall drawings; General arrangement of stringers and footing pieces through Machinery Hall and Annexes, Plan of boiler house, Unknown cross sections relating to Machinery Hall power house, c. 1876, 1653, Shelf: BR-15.1. Basement Recovery Drawings, FP.2017.002. Fairmount Park Historic Resources Archive. https://pprarchives.libraryhost.com/repositories/2/archival_objects/17469 Accessed April 20, 2025.