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.
Pagenstecher portrait alexander . en Portrait photography of Dr med Alexander Pagenstecher German Ophtalomogist Family Archive Pagenstecher Warendorf Author ca PDold Alexander Pagenstecher
Page 2023 Free-images.com. All images are Public Domain