In sending a letter by a friend or acquaintance, and not through the mail, acknowledge the courtesy of your friend on the envelope. The letter should not be sealed. The following is the proper form:
A note or letter sent to a friend residing in the same place, by a messenger, may be addressed as follows, or bear the full address:
FORM OF A LETTER.
DEGREES OF FORMALITY OBSERVED.
In commencing and signing notes and letters there is a difference of opinion in the degrees of formality to be observed, but generally this scale is used according to the degree of acquaintance or friendship. "Madam" or "Sir," "Dear Madam" or "Dear Sir," "My Dear Madam" or "My Dear Sir," "Dear Mrs. Brown" or "Dear Mr. Brown," "My Dear Mrs. Brown" or "My Dear Mr. Brown," "My Dear Friend." In closing a note, the degrees are implied as follows: "Truly Yours" or "Yours Truly," "Very Truly Yours," "Sincerely Yours," "Cordially Yours," "Faithfully Yours," "Affectionately Yours." The proper words should be carefully selected, as the conclusion of a note or letter makes an impression on the person reading it. To aged persons the form, "With great respect, sincerely yours," recommends itself as a proper form. "Yours, etc.," is considered a rude ending. If you are sufficiently well acquainted with a person to address her "My Dear Mrs. ——," do not sign "Yours Truly," or "Truly Yours," as this is the form to be used in writing to strangers or in business letters.