Dear Miss Cards Etiquette, I have a couple of questions in regards to sending holiday greeting cards to business associates. First, is it still appropriate to address a card to two gentlemen with Messrs.? Second, is it considered appropriate etiquette

This is one of the oft-most asked questions, and there is actually some disagreement out there on this topic. I’ve actually looked around to try and find a truly definitive reference with no luck, so here is what I believe