1970—
Pub. L. 91–579 inserted references to exhibitors and inserted proviso that operators of auction sales subject to section
2142 of this title shall not be required to comply with the provisions of this section.
Amendment by
Pub. L. 91–579 effective one year after Dec. 24, 1970, see section 23 of
Pub. L. 91–579, set out as a note under section
2131 of this title.