Are any other photos available besides the series from this setting?
I forgot to answer this - a divan is used for Tatiana's solo 1914 formals, and she's also sat on it for some of OTMA's group 1914 formals.
Alexei is sat on one for his 1913 solo formals (with the book) and stood gripping onto the handles in his 1906 formals.
Maria is also sat on one reading a book for her 1908 solo formal photographs (I think it's 1908, I'm terrible with dates!).
And I swear the LP sit on one for a formal or a series of formals with baby Alexei as well.
Three different divans are used - for Alexei's 1913 and 1906 photographs and the one Anastasia sits on in the photograph you posted, the arms 'curve in', if that's how you'd describe it.

(sorry for how small it is!)
For Maria's formals and the one the LP sit on in the session with baby Alexei, the arms 'curve out'.

Both are made of wood.
Tatiana sits on one in her solo formals and in OTMA's group formals of 1914. This one has a fabric seat with some sort of pattern on it and a metal frame with much shorter arms.

Finding these pictures I stumbled upon two more photos where chairs that look like divans are used:
Tatiana sitting in a divan that looks like the one from Alexei and Anastasia's photographs, 1916 OTMA formals:

Alexandra sat on a chair in the 1913 formal session with OTMA that I think is a divan:

So the IF owned more then one divan, and used them for many photograph sessions.
(I own none of the photos)
