31 C.F.R. § 316.4 Registration.
Title 31 - Money and Finance: Treasury
Series E bonds were permitted to be registered as set forth in subpart B of 31 CFR part 315, also published as Department of the Treasury Circular No. 530, current revision.
Title 31: Money and Finance: Treasury
PART 316—OFFERING OF UNITED STATES SAVINGS BONDS, SERIES E
§ 316.4 Registration.