A woman who wishes to present a letter of introduction to another woman, calls personally and leaves the letter with her own card, or slips her card into the envelope, seals it, and sends it through the mails. Either method of presentation is correct. However, when the letter is addressed to a gentleman, she does not call, unless it is some very special and unusual occasion, but trusts the letter to the mails for safe delivery.
ACKNOWLEDGING A LETTER OF INTRODUCTION
A letter of introduction requires immediate recognition in some form. Either a call or an invitation should be made within three or four days. If it is impossible to honor a letter of introduction by the usual form of visiting or entertaining then it is absolutely essential that a prompt and adequate explanation should be written to the author and bearer of the letter.
Ordinarily, when the bearer of a letter of introduction is a woman, a call is made within three days. This call is followed by the offer of some hospitality, usually a luncheon or tea. A gentleman calls upon a lady or upon another gentleman as soon as he receives a letter of introduction. But a lady, instead of making a call, sends an invitation to the gentleman who is introduced to her by means of a letter.
Any delay in acknowledging a letter of introduction is uncivil, both to the person who wrote the letter and the one being introduced. If one is invalided, a short note should be written explaining why a call cannot be made, and arranging for a meeting as early as circumstances permit. But to wait a week or two before acknowledging a letter
