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.
Grigorowitsch DG. Grigorowitsch DG mit der genderten Rckenflosse OKB Grigorovich Picture published prior in USSR PDRussia Grigorovich IP Black and white photographs of aircraft
Page 2023 Free-images.com. All images are Public Domain