recent grief or loss, or if he is the victim of unhappy circumstances or peculiar prejudices, a private letter should be sent to the person to whom the letter is addressed, explaining the situation. This does not hold true when the stranger has some special mission to perform; in this case, the explanation is written directly in the original letter of introduction.
A note of introduction rarely covers more than a page or a page and a half of medium-size note paper, and it should be confined strictly to the presentation of the person in whose behalf it is written. Nothing irrelevant, such as inquiry regarding the health of certain people of mutual acquaintance, or of domestic interest, should be included. The letter is placed in an unsealed envelope.
PRESENTING THE LETTER
Usually letters of introduction are not presented in person, but sent with the card of the man or woman to be introduced. This relieves the ceremony of that awkwardness which usually follows when someone presents a letter of introduction and waits while it is being read. If one does not wish to send it through the mails, the letter may be left with one's card at the door of the one to whom it is addressed.
When the letter of introduction is from a gentleman to a lady, or rather when the letter introduces a gentleman to a lady, he invariably calls in the afternoon and sends up the letter with his card. If the lady is not at home, he may slip the card into the same envelope as the letter, and leave it with the servant to be delivered. A gentleman also calls to present a letter of introduction to a member of his own sex.
