31 C.F.R. § 316.3 Governing regulations.
Title 31 - Money and Finance: Treasury
(a) The regulations in 31 CFR part 315 apply to definitive Series E bonds that have not been converted to book-entry bonds. (b) The regulations in 31 CFR part 363 apply to definitive Series E bonds that have been converted to book-entry bonds through New Treasury Direct. [70 FR 14941, Mar. 23, 2005]
Title 31: Money and Finance: Treasury
PART 316—OFFERING OF UNITED STATES SAVINGS BONDS, SERIES E
§ 316.3 Governing regulations.