My query is related to the venue of conference for the 200th 
anniversary of the Russian Academy of Sciences (RAS, or the Academy 
of Sciences of the USSR) held in September 1925. Was it in Leningrad 
or Moscow? And I would like to get some evidence.

Robert Skidelsky's _John Maynard Keynes: The Economist as Saviour, 
1920-1937_ (1992) has several photographs between p. 220 and p. 221. 
One of them is the picture entitled "John Maynard Keynes in Petrograd 
for the 200th anniversary of the Russian Academy of Sciences, 1925".

However, the name of Petrograd was changed to Leningrad in 1924. 
(Now, it is called Saint Petersburg.) 
http://en.wikipedia.org/wiki/Saint_Petersburg

We know Maynard Keynes and Lydia Lopokova actually spent one week in 
Leningrad and a second week in Moscow in September 1925 (Professor 
Richard Keynes's letter to me of 17 October 2008).

The Japanese economist Tokuzo Fukuda participated in the conference. 
He was three persons left from Keynes in the memorial photograph of 
1925 (It was confirmed by M. Yasukawa). Fukuda's essay "Changes in 
Economic Structure and the Questions of Productivity and Population: 
Lectures and Debate in Moscow, 1925" (in Japanese, 1930) suggests 
that the conference was held in Moscow and the photograph was taken 
there. Fukuda did not say that he had visited Leningrad.

Fukuda (1930) says that in 1925 the Russian Academy of Sciences 
organized an international conference by inviting international 
scholars, including six economists. Maynard Keynes, Eli Hecksher, and 
Tokuzo Fukuda were among the six.

I did not find any information of the conference on the English Web 
site of RAS. I cannot read Russian.

http://www.ras.ru/index.aspx?_Language=en
http://en.wikipedia.org/wiki/Russian_Academy_of_Sciences

I contacted Professor Robert Skidelsky and Professor Richard D. 
Keynes (brother of Dr. Milo Keynes), and they encouraged me to clear 
up this mystery.

Thank you for your information and suggestion.

Aiko Ikeo (in US)