In this article, we explain what an enclosure is and how to cite one, and we provide an example of an enclosure in a business letter. If you are enclosing materials with your business letter, you'll need an enclosure notiation.Learn more with our enclosure letter sample. It's important to have a list of any additional items enclosed with the business letter, in case the recipient misplaces them. The letter is a response to a job advertisement seeking a supervisor position. Add an enclosure notation after your signature at the end of the letter, and abbreviate it with "Enc." or "Encl. As an option, you may list the name of each document you are including in the envelope. San Jose City College Business and Workforce Development Please always fill in. JessaChap8 Fall2019.docx. Letter to Vince Rivero, Stuart Whang, Paul Lee, and Xavier Campos regarding 2159 Chisin Street, dated February 1, 2024.