2365 S Mayfield Ave
Chicago, IL 60652
[Subject: Normally bold, summarizes the intention of the letter] -Optional-
Dear PAUL SMITH,
All of the data I asked for about your new range of cameras arrived in the post today. It is exactly what I require. I have a long paper to write about the use of technology in photography and your data will help me to finish my work. I am willing to supply an advanced copy of the paper if you wish to see it before publication.