12 CFR § 701.38 - Borrowed funds from natural persons.
(1) The borrowing is evidenced by a signed promissory note which sets forth the terms and conditions regarding maturity, prepayment, interest rate, method of computation, and method of payment;
(2) The promissory note and any advertisement for such funds contains conspicuous langauge indicating that:
(i) The note represents money borrowed by the credit union;
(ii) The note does not represent shares and, therefore, is not insured by the National Credit Union Share Insurance Fund.