File:Atatürk Sakarya Muharebesi öncesinde cepheye hareket ederken, Ankara, 12 Ağustos 1921.png

This work first published in the Ottoman Empire is now in the public domain because the Empire's copyright formalities were not met (copyright notice, registration, and deposit), or because the copyright term (30 years after the death of the author, sometimes less) expired before the Empire was dissolved (details).