I ask because I was unpacking all my books the other day, and I came across a book that I absolutely forgot I had: "Harijs Poters un Fēniksa Ordenis" - the 5th Harry Potter book, in Latvian. Which I do not speak a word of.
I only have this book because someone brought it to me last summer (she had gotten it from a 'free book' pile somewhere) and wanted to know what language it was in. I had made the semi-educated guess of Latvian, but I wasn't sure until I found a little copyright wording in the back that mentioned Riga.
Other than that, my books are all in Spanish, French, or Chinese, which I can get through with a dictionary. But I giggle every time I see the Latvian book, which I of course can't bring myself to throw away - hopefully I'll meet someone who speaks Latvian I can give it to!