http://www.rekkurescue.com/
We adopted two kittens from Rekku Rescue last year, they mostly come from Estonia (with kitty passports!), very reliable organization, and you get to see pictures of what kind of cat you'd like before getting them. We had tried getting kittens from several other places first, for example from
http://www.pelastetaankissat24.com/, but they decided that, because I'm from America, even though my husband is a Finn, I'm not
qualified to be a decent mother to any of their many cats who are desperately searching for homes. Ridiculous. So, I'm very happy with the experience we had from Rekku. They have older cats, too, but still lots of kittens.