Grand Duchesses Maria and Anastasia walking home from their hospital: 1916.
Grand Duchesses Maria and Anastasia visiting with nurses outside their hospital in Tsarskoe Selo: 1916.
Grand Duchess Maria and some soldiers at the hospital: 1916. Notice the photo of the Little Pair on the table to the left.
Credit to Tatiana Z.
The grand duchesses visiting the wounded: 1916. I love Maria’s smile in the one on the bottom right!
The Emperor visiting Grand Duchess Olga Alexandrovna’s hospital in Kiev, and the grand duchess at the hospital: 1916.
Grand Duchesses Maria and Anastasia Nikolaevna of Russia at the hospital in Tsarskoe Selo where they were patronesses. You can see the 1913 portraits of the little Pair in the second photograph. Source