I have just finished reading this new book on the Kresy-Siberia events and would thoroughly recommend it. I would hazard a guess that it will become a standard work on the subject and will be referred to by many future researchers.
Kelly is an academic, an historian, and the book is both a personal memoir of his family's experiences in 1939-46 and an historical analysis of what happened and why. It is buttressed by hundreds of footnotes and an impressive bibliography but is nevertheless highly readable. It is about the Ryzewski family (I have omitted diacritics) who used to live in the Kresy (present-day Belarus) - the husband of the family, Rafal, a former legionnaire, dodges the NKVD (and Katyn) and eventually ends up in Italy and then the UK, while his wife and daughters get sent to Kazakhstan and make their way out of the USSR with the Anders Army to Persia, then to India and finally Devon, England.
Although I consulted many of the same sources when writing my own novelised version of what happened to my parents, Kelly has an historian's eye for analysis and ideas when recounting and contextualising his own grandparents' experiences. This is why I think his work will become a standard reference work.
My book, Worlds Apart: Surviving Identity and Memory, is available from online retailers, e.g. Amazon. There is more about the book and the context behind it at www.henrypavlovich.com (ISBN 978-1-84728-226-2)
Some photos are on www.pbase.com/pavlovich