Originally Posted by
peaceandjoy
As far as media, I think as soon as you send a book that has a card with it (as a gift, for example), you can no longer send it media mail. You'd be better off sending it them separately, with a note in the card that the gift is arriving in a different envelope.
I thought so too, but just looked it up. You can send a card with a book. Rules here -
https://liteblue.usps.gov/news/link/...Guidelines.htm