41 CFR § 105-64.203
How do I request access in writing?
June 9, 2020
If you request access in writing, mark both the envelope and the request letter “Privacy Act Request”. Include in the request your full name and address; a description of the records you seek; the title and number of the system of records as published in the Federal Register; a brief description of the nature, time, and place of your association with GSA; and any other information you believe will help in locating the record.