The Ladies' Book of Etiquette, and Manual of Politeness

If your friend is at home, after sending your card up to her by the servant, go into the parlor to wait for her. Sit down quietly, and do not leave your seat until you rise to meet her as she enters the room. To walk about the parlor, examining the ornaments and pictures, is ill-bred. It is still more unlady-like to sit down and turn over to read the cards in her card basket. If she keeps you waiting for a long time, you may take a book from the centre-table to pass away the interval. Never, while waiting in a friend's parlor, go to the piano and play till she comes. This is a breach of good-breeding often committed, and nothing can be more ill-bred. You may be disturbing an invalid unawares, or you may prevent your friend, if she has children, from coming down stairs at all, by waking the baby. If you are a stranger in the city, and bring a letter of introduction to your hostess, send this letter up stairs with your card, that she may read it, and know how to welcome you when she comes down stairs. In this case, write upon the card the name of the hotel at which you are staying, and mention in the course of conversation, how long you will be in the city. If you have a visitor, and desire to introduce her to your friends, you may invite her to accompany you when paying calls.