Versions of CFR > Title 26 > Chapter I > Subchapter A > Part 1 > Regulations applicable on or before January 4, 2009. on LawServer 2024 CFR > Title 26 > Chapter I > Subchapter A > Part 1 > Regulations applicable on or before January 4, 2009. 2023 CFR > Title 26 > CHAPTER I > SUBCHAPTER A > PART 1 > Regulations applicable on or before January 4, 2009. 2022 CFR > Title 26 > Chapter I > Subchapter A > Part 1 > Regulations applicable on or before January 4, 2009. – Regulations applicable on or before January 4, 2009. 2021 CFR > Title 26 > Chapter I > Subchapter A > Part 1 > Regulations applicable on or before January 4, 2009. – Regulations applicable on or before January 4, 2009.