Belden Associates, a Dallas-based company providing newspapers with proprietary marketing, editorial and circulation research for 68 years, will close, according to CEO Sammy Papert Wednesday, Editor & Publisher reported.

In recent years "newspapers had a declining appetite for proprietary audience research that would help them understand existing audiences and identify new ones," Papert added, Media Post reported.

The Interactive division will still be operating as a separate company in San Francisco, according to Media Post and E&P.