Do I hear Alexei?
Yes.
Kidding. I saw that scan Sarushka posted, I think that it was scanned from a Russian book, since it seems that I recognize the cyrillic on the photo - what I want to say? That if the Russian book says that the girl is Anastasia, it is most likely correct, since the GARF has excellent descriptions and they're rarely wrong.
EDIT: When I look better, I doubt if the girl was Maria...? But I have seen more often little Anastasia's photos on the yachts than little-Maria's.