Guide books for Russia and Baltic countries

I am looking for a nice travel book giving information about Russia & Baltic countries. I have the LETS GO EUROPE on a Budget 2007 Edition? Does any one know if there an edition of LETS GO only for Russia? Any other books !recomendations

Lonely planet has a nice book- Baltic States, but doesn't include Russia.

I would like to add 1 point. If there are any nice publications in the UK or US on travel book (Russia- Baltic Countries) do send me the details if possible. I can arrange for getting it here in Germany

Does anyone have a guide book to lend me for 10 days? Lonely planet or any other guide book will do.
I am doing a travel journey through Berlin-Warsaw- Vilinus - Riga. I would be travelling by train so it would be interesting to read through some good information (Historical/facts/Culture) about these cities.

I have the Lets Go edition. So any other books would be great! PM me so that I can get in touch .