Pavlovsk Palace and Park
Huge online book by Anatoli Mikhailich Kuchumov, former curator at Pavlovsk and the Alexander Palace.
Valse Des Fleurs
A day in St Petersburg and a ball at the Winter Palace in 1868 by Sacheverell Sitwell.
Written just before the Russian Revolution focusing on pilots and giant aeroplanes built by Sikorsky.
Tsarskoe Selo in 1910
Originally published in 1910 for the 200th anniversary of the founding of the city.
The Last Tsaritsa
Written by Lili Dehn, a close friend of the last Empress, Alexandra Feodorovna. Many unique first hand stories.
Memoirs written by Prince Felix Yussupov, one of the murderers of Rasputin.