1234, Main Street
Boston, MA 02123
05 April, 2005
<Recipient Address Goes Here>
A certain matter has been bothering me for some time now, and I thought I should make you aware of it.
Please contact me if you require further information about this matter. I hope you will see fit to devote some time to studying it, and that something can be done to solve the problem. If you have questions, you can reach me at <phone number>.
I thank you for your time and your attention.
encl: <List of enclosed items goes here>