Copyright 1979-1980 by The Chicago Tribune/New York News Syndicate.
On sale and publication date from the publication date reported to the U.S. Copyright Office found in the Public Catalog, Copyright Catalog (1978 to present) online (http://cocatalog.loc.gov/cgi-bin/Pwebrecon.cgi?DB=local&PAGE=First) retrieved 05 October 2015. Registration date: May 5, 1980. Copyright registration number: TX0000476527. Copyright Claimant: Chicago Tribune/New York News Syndicate.