1. C.44.h.5, 2(432a) Reference (shelfmark): C.44.h.5, 2(432a) Title: Vacuum apparatus. Pontifex and Wood [at the Great Exhibition, London]. Photographer: Ferrier, Claude-Marie Scope & Content: Close view of vacuum apparatus, used in the sugar industry, on display at the Great Exhibition. Collection Area: Printed Collections Languages: Not applicable Date Range: 1851 Extent: 1 item