45 CFR § 1177.6 - Notice to debtor.
The first written demand for payment must inform the debtor of the following:
(a) The amount and nature of the debt:
(b) The date payment is due, which will generally be 30 days from the date the notice was mailed;
(c) The assessment of interest under § 1177.7 from the date the notice was mailed if payment is not received within the 30 days;
(d) The right to dispute the debt;
(e) The office, address and telphone number that the debtor should contact to discuss repayment and reconsideration of the debt and;
(f) The sanctions available to the National Endowment for the Humanities to collect a delinquent debt including, but not limited to, referral of the debt to a credit reporting agency, a private collection bureau, or the Department of Justice for litigation.