Section, added Pub. L. 91–172, title VII, § 705(a), Dec. 30, 1969, 83 Stat. 670; amended Pub. L. 93–625, § 3(b), Jan. 3, 1975, 88 Stat. 2109; Pub. L. 94–455, title XIX, § 1906(b)(13)(A), Oct. 4, 1976, 90 Stat. 1834, related to amortization of certain railroad rolling stock.

Statutory Notes and Related Subsidiaries
Savings Provision

For provisions that nothing in repeal by Pub. L. 101–508 be construed to affect treatment of certain transactions occurring, property acquired, or items of income, loss, deduction, or credit taken into account prior to Nov. 5, 1990, for purposes of determining liability for tax for periods ending after Nov. 5, 1990, see section 11821(b) of Pub. L. 101–508, set out as a note under section 45K of this title.