123, X Street, Y Avenue
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear Austin Parker,
This is your chance to take a look at the ultra light aircraft that are quickly taking over the whole industry. There is of course the Lancaster STORM to view, as well as ultra light aircraft from many other manufacturers. All can be seen at the Great York Fly In, scheduled for July 4, 5, and 6 at the York Airfield, New England. We would like to see as many of you there as possible. On presentation of this letter you will also be given a free GPS unit to be fitted into your purchased Lancaster STORM ultra light.