Except when it is the first word of the salutation, dear should not begin with a capital letter. The address in the salutation should be repeated exactly on the envelope and particular care should be taken to make it legible. The stamp should always be placed in the upper right hand corner. It is bad form to put it on obliquely or upside down or to place it in the left hand corner or on the back flap of the envelope. It is a silly practice to do so and causes the postal clerks a great deal of trouble.
FUNCTION OF THE SOCIAL LETTER
There are, necessarily, several kinds of letters, the three most important divisions of which are the friendly letter, the business letter, and the social letter. In its strictest sense, the social letter is written for a distinct social purpose—usually about, or in response to, some purely social circumstance. The difference between a friendly letter and a social letter is relatively the same as the difference between a strictly formal and a friendly informal visit.
To write a friendly letter, one simply writes what one feels, heeding no very stringent rules regarding letter-writing. But the social letter-writer finds that there are certain forms that must be carefully observed, if his or her letters are to be considered entirely correct. There are two distinct forms of the social letters—the formal and the informal. The formal social note is used only for invitations, announcements and their respective acknowledgments. It is always written in the third person, and always requires an answer. Even though it is sent to the most intimate friend, the formal note remains formal; although later a friendly letter may be sent to
