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.
Grnerlkka map . Kart over Grnerlkka Kart over Kristiania udarbeidet av Byens Opmaalingsvsen Kristiania Opmaalingsvesen PDold Old maps of Oslo Grnerlkka
Page 2023 Free-images.com. All images are Public Domain