Former sections 4452 and 4554 of this title, referred to in text, mean sections 4452 and 4554 of former Title 39, The Postal Service, prior to the general revision and reenactment of Title 39 by Pub. L. 91–375, Aug. 12, 1970, 84 Stat. 719.

1993—Subsec. (b). Pub. L. 103–123 amended subsec. (b) generally. Prior to amendment, subsec. (b) read as follows: “The rates for mail matter specified in former section 4554(a)(1) or 4554(b)(2)(A) of this title, when mailed from a publisher or a distributor to a school, college, university, or library, shall be the rate currently in effect for such mail matter under the provisions of former section 4554(b)(1) of this title.”

1976—Pub. L. 94–421 designated existing provisions as subsec. (a) and added subsec. (b).

Pub. L. 103–123, title VII, § 706(b), Oct. 28, 1993, 107 Stat. 1272, provided that: “The amendment made by subsection (a) [amending this section] shall apply with respect to mail sent after September 30, 1993.”

Section effective Jan. 20, 1971, pursuant to Resolution No. 71–10 of the Board of Governors. See section 15(a) of Pub. L. 91–375, set out as a note preceding section 101 of this title.