Lepke
In 1869, Rudolph Lepke, a German art dealer, founded the Rudolph Lepke’s Kunst-Auctions-Haus, the first art auction house in Berlin. In 1887, Wilhelm von Bode auctioned off 1062 paintings from the depot of the National Gallery auctioned at the Lepke auction house. Lepke retired in 1900. The business was carried on by Hans Carl Krüger, an art historian and brothers, Dr. jur. Adolf Wolffenberg und Gustav Wolffenberg.
The Lepke auction catalogues can be accessed at: https://library.si.edu/digital-library/author/rudolph-lepkes-kunst-auctions-haus. Accessed 1 June 2021.
For more information please see: https://www.arthistoricum.net/themen/portale/german-sales/auktionshaeuser-a-z/auktionshaeuser-deutschland-a-z/berlin . Accessed 1 June 2021.