Try to only include the most necessary enclosures with your letter, as you can always follow up with additional information in another letter. In the body of your letter, mention the documents you've enclosed and give them context so the reader is prepared to read them.The heading provides the reader a return address. Type the address (minus the writer's name) at the top of the letter. After speaking with Emily Richards about her past summer in the internship program, I am very interested in your. You could say, "the following items are enclosed:". You could also say, "please find the enclosed items listed below:" and then list the items. Cover Letter Format. If you are enclosing materials with your business letter, you'll need an enclosure notiation. Learn more with our enclosure letter sample.