English: This photograph of Grand Duchess Olga Nikolaevna of Russia and Tsarevich Alexei was taken in May 1918 aboard the Russia, a ship that ferried them from Tobolsk to Yekaterinburg, Russia.
It is the last known photograph taken of them. I downloaded the photo from a posting at Alexanderpalace.org Because of its age, I think it's probably in the public domain. I have seen it reproduced in other sources and it is of poor quality, so it's not likely to have commercial value. If I am wrong, please delete the photo immediately.