31 C.F.R. § 375.10
We provide public notice that we are redeeming Treasury securities by issuing a redemption operation announcement. This announcement lists the details of each proposed redemption operation, including the maximum redemption amount, the range of maturities of eligible securities, descriptions of the securities that fall within that maturity range, and the redemption operation and settlement dates. The redemption operation announcement and this part specify the terms and conditions of a redemption operation. If anything in the redemption operation announcement differs from anything in this part, the redemption operation announcement will apply. Accordingly, you should read the applicable redemption operation announcement along with this part.
31 C.F.R. § 375.10