First, my thanks to Deborah for recommending Room! Room was one of my selections for a marginal commentary back in October, but was wildly popular at the library, so I didn't get my hands on a copy until now.
Emma Donoghue, the book's author, lives in London, Ontario, which makes Room another Canadian work for which I have written a marginal commentary on The Marginal Virtues.
This edition was published by HarperCollins in 2010. On the cover of the copy I have, there is an illustration with a note stating that Room was shortlisted (why that is a verb I don't know) for the Man Booker Prize 2010. It did not win, but you have to think that Donoghue must have been pretty thrilled. I don't know how well known a literary figure she was before publishing Room, but I dare say that it is her breakthrough work. It may well even be her masterwork.