In 1998 and 2000, during preparatory work for the renovation of the Langhans House, two locked cabinets were discovered during structural surveys, containing more than nine thousand glass negatives. These were portraits of notable figures photographed over seventy years at the Langhans Studio.
The discovery of thousands of glass negatives in the Langhans house initiated an extensive process of restoration and digitization, preserving a unique photographic heritage. Today, the archive provides access to portraits of prominent figures from the turn of the 19th and 20th centuries and serves as a valuable resource for historical research.
