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.
Johann Gustav Droysen . en Gustav Droysen german historian de Gustav Droysen deutscher Historiker historikertag unihalle de shtml PDold Johann Gustav Droysen
Page 2023 Free-images.com. All images are Public Domain