In Rev. Rul. 2009-18, issued Tuesday, the tax agency listed the documents now officially obsolete as:
- Rev. Rul. 64-333 (1964-2 CB 114)
- Rev. Rul. 65-200 (1965-2 CB 141)
- Rev. Rul. 66-254 (1966-2 CB. 125)
- Rev. Rul. 66-312 (1966-2 CB 127)
- Rev. Rul. 67-69 (1967-1 CB 93)
- Rev. Rul. 67-78 (1967-1 CB 94)
- Rev. Rul. 67-361 (1967-2 CB 153)
- Rev. Rul. 67-387 (1967-2 CB 153)
- Rev. Rul. 67-388 (1967-2 CB 153)
- Rev. Rul. 68-179 (1968-1 CB 179)
- Rev. Rul. 68-482 (1968-2 CB 186)
- Rev. Rul. 68-487 (1968-2 CB 187)
- Rev. Rul. 68-488 (1968-2 CB 188)
- Rev. Rul. 69-629 (1969-2 CB 101)
- Rev. Rul. 70-243 (1970-1 CB 107)
- Rev. Rul. 87-114 (1987-2 CB 116)
- Rev. Rul. 90-24 (1990-1 CB 97)
- Notice 90-73 (1990-2 CB 353)
- Notice 92-36 (1992-2 CB 364)
- Announcement 95-48 (1995-23 IRB 13).
The tax agency said Notice 89-23 (1989-1 CB 654) is also obsolete except to the extent described in the last paragraph of the “Treatment of Controlled Groups that Include Tax-Exempt Entities” section of the preamble to Treasury Decision 9340 at 72 FR 41138, and 2007-2 CB 499.