The Ladies' Book of Etiquette, and Manual of Politeness

Never take any one who calls upon you into any room but the parlor, unless invited to do so by your hostess. You have, of course, the entree of other rooms, but you have no right to extend this privilege to others. If you have many gentlemen visiters, check too frequent calls, and make no appointments with them. If they show you any such attention as to offer to drive you to places of interest, or visit with you picture galleries or public places, always consult your hostess before accepting such civilities, and decline them if she has made other engagements for you. If you receive an invitation to visit any place of public amusement, decline it, unless one of the family with whom you are staying is also invited. In that case you may accept. If the gentleman who invites you is a stranger to the family, introduce him to your hostess, or mention her name in conversation. He will then, if he really desires you to accept his proffered attention, include her in the invitation. When visiting in a family where the members are in mourning, decline all invitations to parties or places of public amusement. It is an insult to them to leave them to join in pleasure from which their recent affliction excludes them. Your visit at such a time will be prompted by sympathy in their trouble, and for the time it is thoughtful and delicate to make their sorrows yours. If sudden sickness or family trouble come to your friend whilst you are with her, unless you can really be useful, shorten your visit. In time of trouble families generally like to be alone, all in all to each other; and a visitor is felt a constant restraint.