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.
Krall Wilhelm von Osten . Wilhelm von Osten Karl Krall Denkende Tiere Vorsatzblatt oder frher Karl Krall PDold Horse tamers Clever Hans Black and white photographic portraits of men
Page 2023 Free-images.com. All images are Public Domain