12 U.S.C. § 87 to 89
Section 87, R.S. §5203, related to restriction on use by bank of its circulating notes.
Section 88, R.S. §5206, related to restriction on use by bank of notes of other banks.
Section 89, R.S. §5196, related to duty of bank to receive circulating notes of other banks in payment of debts.