Pub. L. 87-793, pt. I, tit. I, sec. 109

Sec. 109. Section 4554 of title 39, United States Code (relating to books, films, and similar educational materials), is amended by striking out that part of subsection (a) which precedes paragraph (1) and inserting in lieu thereof the following: 76 Stat. 835 “(a) Except as provided in subsection (b) of this section, the postage rate is 9½ cents a pound for the first pound or fraction thereof and 5 cents for each additional pound or fraction thereof when mailed after January 6, 1963 and prior to January 1, 1964, and 10 cents for the first pound or fraction thereof and 5 cents for each additional pound or fraction thereof when mailed after December 31, 1963, except that the rate now or hereafter prescribed for third- or fourth-class matter shall apply in every case where such rate is lower than the rate prescribed in this subsection on—”.