An invitation to a wedding must be acknowledged by sending cards to those in whose name the invitation was issued, and may, if she so pleases, call on the bride on her return from her wedding journey.
One should send announcement cards rather than invitations to those with whom acquaintance is slight.
An invitation to afternoon tea does not require reply. Leave cards if present.
The etiquette of calling on an "at home" day does not differ from that of an ordinary call, save that some light refreshment is offered, as a rule.
That the bachelor and the widower should respond to every invitation whether accepted or declined, by calling and leaving cards, whereas the married man's wife may leave his cards with her own. Men ignore this rule a great deal, however.
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Cards must be engraved, never written or printed.
That a married woman uses her husband's full name on her cards; that a man's name always has the prefix Mr., and an unmarried woman's or young girl's that of Miss, and that "pet" names are not "good form" on cards.
The extreme limit of a call is twenty minutes, and the first caller to arrive should be the first to depart.
That you should not prolong your leave-taking.