This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Duden im Klasszimmer Wesel. de Konrad Duden stehed links im KLassenzimmer des Gymnasiums in Wesel Eine zeitgenssische Darstellung en Konrad Duden leftstanding in the high school classroom in Wesel contemporary presentation ru here faz net html anonymous PDold Konrad Duden
Page 2023 Free-images.com. All images are Public Domain