1865
Helmut Petschler & Company, 1865
Helmut Petschler & Company, 1864
Helmut Petschler & Company, 1866
Helmut Petschler & Company, 1860
![Study of Ferns on the Rocks in Nanny Nutter's Porridge Pot. [Derbyshire]](https://media.getty.edu/iiif/image/3da3fb78-8501-4615-b907-94ca1e9adef1/full/843,/0/default.jpg)
