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.
Sergey Glazenap. ru en Sergey Glazenap before XIX URL rsl ru php path pdf page author PDRusEmpire PDold Uploaded with Astronomers from Russia Glasenapp family
Page 2023 Free-images.com. All images are Public Domain