| Albert Renger-Patzsch Spinning machines, Schubert & Salzer Factory, Ingolstadt 1950s Gelatin silver print, on Agfa-Brovira paper 16.5 x 22.5 cm Bassenge Photography Auctions Courtesy of Bassenge, 19th-21st Century Photography, 6 June 2012, Lot: 4271 LL/47989
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