pixabay and 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.
This image was acquired from
Keywords from Image Description:
aircraft airport po radial engine fighter plane biplane aunt miskolc hungary . ru Zajcsik other versions Custom marker confirmed INeverCry files for migration Polikarpov Po in aviation
Page 2023 Free-images.com. All images are Public Domain