In the Siebengebirge (1930s)
In the Siebengebirge, Path through the Woods (1938)
In the Siebengebirge, Path through the Woods (1930s)
Kreuzberg with Kreuzburg, Ahr Valley (ca. 1930)
Larch (Larix decidua, Pinaceae) (1930s)
Marsh Plants, Acorus calamus and Lythrum salicaria (1930s)
Mixed Woodland with Blueberries (1930s)
Oak Trees (1930s)
Pine Trees on the Hohes Venn/Eifel (1930s)
Spring in the Siebengebirge, View over the Rhine Valley (1930s)
The Wolkenburg (1937)
The Wolkenburg (ca. 1937)
The Wolkenburg, Fallen Giant, Spruce and Norway Spruce (ca. 1938)
The Wolkenburg, Trail through the Woods (ca. 1940)