Professor Govoni's website. Find links to a glossary, media kits, TV, radio and newspaper rates and information sites including associations.
Try searching Google (use search box below) for the publication title and the phrase "media kit." For example type Forbes and "media kit" or go to the magazine's web site and find their media kit. Most publications provide this feature.
The database used in the past removed their data. In process of searching for another resource.