NPS 21 - National Advertising - Warnings [NPS - Rescinded]
National Policy Statement 21
All advertisements placed in national publications and which name registrants or their affiliates and which concern issues that are in primary distribution, should contain a warning in the following words or to like effect:
Advertisements "of record" which name registrants or their affiliates may appear in such national publications when the issue has been completely sold and is no longer in primary distribution without the above warning. In such cases, a statement to the effect that the issue has been so sold should be included.