Section 678(a) does not apply to a power which has been renounced or disclaimed within a reasonable time after the holder of the power first became aware of its existence.
source: T.D. 6500, 25 FR 11814, Nov. 26, 1960; 25 FR 14021, Dec. 31, 1960, unless otherwise noted.
cite as: 26 CFR 1.678