About 20 years ago, a friend of mine found three mounted photographs in a shop in Germany. Recognising a "Leica" look in the photos, and knowing that I was using old Leica cameras at that time, he bought the prints and sent them to me. Here is one of them, a view of Breslau. On the back of the mount is printed (I'll translate): "Published by Photographia Wetzlar. Exposure: Dr. Paul Wolff & Tritschler, Braunfels" Print size is 106mm x 157mm. Leica not actually mentioned, but I like to think the picture was made with a Leica + Elmar 5cm lens.