In business introduction, such formality may be set aside.
If a letter of introduction is personally delivered, the party presenting it should also enclose card.
If the party called upon is not at home,
the letter or card should not be left, but sent
by mail or messenger.
The one giving another a letter of introduction
may write to the friend explaining
why it is done, who and what the party is.
If a man sends a letter of introduction to a woman, she should acknowledge it, and, if she wishes, invite him to call.
PARTY RECEIVING—WOMEN. The party receiving cards of introduction should call in person upon woman introduced; if unable to do so, a letter should be sent, stating reasons of inability to be present. A member of the family may make the call instead. It should be done within three days.
If not agreeable to receive party for any reason, a card may be sent or left. No personal visit need be made.
INVALID'S CALLS. A woman unable to call from sickness may have her calls made for her by her sister, or daughter, or some female relative.
INVITATIONS. Care should be exercised in inviting new acquaintances to breakfast, luncheon, or dinner, unless there are some particular reasons why they will be especially agreeable to those invited.
All invitations should be sent by mail.