Don't know if anyone has seen these before, but I'll post them:
The Alexander Palace in the 1840's: An Orthodox service (unknown artist):

View of the AP from the the private gardens (the back)as it looked in the 1840's:

GD Maria Alexandrovna (1853-1920) taking a spin in a carriage in 1858:

Russian military in front of the AP (1832):

Contemporary watercolors of Alexei's playroom on the second floor of the east wing:

