Public Domain Images - TatianaAnastasiaOrtino

This photograph of Grand Duchess Tatiana and Grand Duchess Anastasia Nikolaevna of Russia in captivity at Tsarskoe Selo in 1917 is from the Alexander Palace Web site. It accompanies an online version of the book Last Days at Tsarskoe Selo by Count Paul Benckendorff. This book appears to be in the public domain since it is has been scanned onto the Web site and was written in 1919. The photographs have been published numerous times as well, so I think they are also most likely in the public domain.
Русский: Татьяна Николаевна и Анастасия Николаевна в Царском Селе, 1917 год (ГА РФ, ф. 683 оп. 1 д. 125 л. 25 об. фото 442)