This chapter does not apply to:
(a) An act or practice required or specifically permitted by or under Federal or State law, or by or under other sections of the Codified Ordinances.
(b) A publisher, broadcaster, printer or other person engaged in the dissemination of information or the reproduction of printed or pictorial matter insofar as the information or matter has been disseminated or reproduced in behalf of others without knowledge that it violated this chapter.
(1952 Code § 26-7-83)