Warning though, for some of them you will never get rid of them. I still occasionally get a packet from Kenmore after DECADES of not requesting them. It doesn't matter how many times I've told them to knock it off, once or twice a year they still show up.
On Jay Smith's website he still lists approvals as a service. While his expertise is in Scandinavia his stock is worldwide in scope. It would be worth checking out and sending him an email to see. If I wanted approvals he's the first person I would contact.
The one "approval" source that no one mentioned is the APS circuit books. The one good thing here is that you do not have to worry - the APS stands behind these books. And to me at least, looking before you buy is important!