Use block style.
Sales Letter
Actually, Superintendent Johnson doesn’t just want information after all. It’s come to my attention that he wants the information to decide whether or not to buy all ENG 114 students their own computers. So, now tell him about the class but also sell it to him–tell him why ENG 114 is important, why students need computers to successfully complete the course, and how the computer purchase will ultimately benefit the state of North Carolina/ NC Dept. of Public Instruction / Superintendent Johnson/ The Students (you don’t have to explain the benefit for all four entities). And remember, you must establish need, or he isn’t going to fork over the cash.