The deferential butler, the suitor, the undertaker...all presenting calling cards to announce a most-important arrival. I adore calling cards as much as I adore tight bodices and fainting women.
When I was little, I happened to open the door when someone knocked, and a man offered me his calling card to annouce his presence to my parents. I remember thinking, "Huh?" and then asking him to wait outside until I gave his card to my mother. She immediately said, "You should have invited him inside!" to which I said "What about no talking to strangers?" "Anyone with a calling card is not a stranger," she replied. So right she was, I have since discovered, and I myself have calling cards (OK, I've never used them, but still...). Maybe you are familiar with Edward Gorey's habit of putting a blank white calling card in one frame of every story, a haunting image. The lone card on the vast floor, dropped by a heart-broken guest who was NOT announced. The snub is unbearable if you have a calling card. So I learned.