Machinery Hall-East Machinery Hall-South Avenue from east end 1 silver albumen print; 43 x 53 cm. Mounted on backing board. Titles on labels: Machinery Hall - east, and: Machinery Hall S. Ave. from e. end. On back of photo: Group photo of the Centennial Guard, Co. F, 2nd Precinct. Written on back of photo: IIIA - 2445 Machienry Hall - East (Not this side r-13 damage note - RF... Interior of Machinery Hall, from east end, with Krupp's guns and Friedr. Wilh. Halle von Triesdorf of the German exhibition in the foreground and the Great Britain and Ireland exhibition in the background.