Sources + 

Much of the material in this book is from my own notes. I have also relied, however, upon a heterogeneous file of several hundred assorted Russian newspapers, covering almost every day of the time described, of files of the English paper, the Russian Daily News, and of the two French papers, Journal de Russie and Entente. But far more valuable than these is the Bulletin de la Presse issued daily by the French Information Bureau in Petrograd, which reports all important happenings, speeches and the comment of the Russian press. Of this I have an almost complete file from the spring of 1917 to the end of January, 1918. + 

Besides the foregoing, I have in my possession almost every proclamation, decree and announcement posted on the walls of Petrograd from the middle of September, 1917, to the end of January, 1918. Also the official publication of all Government decrees and orders, and the official Government publication of the secret treaties and other documents discovered in the Ministry of Foreign Affairs when the Bolsheviki took it over. + 