1. P.P.1931.pch, 7(34) Reference (shelfmark): P.P.1931.pch, 7(34) Title: Dr. Siemens. Photographer: Lock and Whitfield Scope & Content: Genre: Portrait Photography Oval image; head-and-shoulders full-face portrait of the German-born inventor, electrical engineer and metallurgist, Sir Charles William Siemens (1823-1883). Collection Area: Printed Collections Languages: Not applicable Date Range: c 1882 Extent: 1 item