1. Maps C.21.f.12(61) Reference (shelfmark): Maps C.21.f.12(61) Title: Main Building, North Avenue [Philadelphia Centennial Exposition]. Photographer: Unknown Scope & Content: Genre: Architectural Photography Interior view, looking along the main exhibition building, showing exhibitors' stands. Stereo half, arched top. Collection Area: Map Collections Languages: Not applicable Date Range: 1876 Extent: 1 item