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.
Trotsk map . Trotsk near Leningrad Cropped from File atlas of the Soviet Union merged Original Custom marker PDold PDRUexempt Uploaded with Old maps of USSR Old maps of Gatchina
Page 2023 Free-images.com. All images are Public Domain