Include your street address, city, and zip code in the top left corner of the letter. There is no need to include your name or title, as this will be given in the letter's signature.
Write out the full date one line beneath the sender's address. Always spell out the month in full rather than using abbreviations. For instance, November 15, 2011.
Place the recipient's address one line below the date. Be sure to include the recipient's full name and personal title.
Compose the body of your letter as usual, beginning with a salutation, followed by the content of your letter, and ending with a closing which includes your name and personal title.
Indicate the attachment of any documents by simply writing "Enclosures" one line below your closing signature. Alternatively, if you have more than one attachment, you can add the names of each document included directly following the enclosure indication.