Quote Investigator: The earliest strongly matching expression found by QI was published in 1918 in a New York periodical called The Fourth Estate: A Newspaper for the Makers of Newspapers. The words were printed on a sign at a journalists desk, and no precise attribution was given. Boldface has been added to excerpts: 1
Whatever a patron desires to get published is advertising; whatever he wants to keep out of the paper is news, is the sentiment expressed in a little framed placard on the desk of L. E. Edwardson, day city editor of the Chicago Herald and Examiner.
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In 1979 a New York newspaper printed a variant of the expression that replaced advertising with public relations. The words were credited to the prominent journalist and author Malcolm Muggeridge: 23
Todays thought: News is anything anybody wants to suppress; everything else is public relations. Malcolm Muggeridge.
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By January 1999 a version of the saying was being connected to the famous author and essayist George Orwell in the pages of the New York Post: 27
George Orwell said that journalism is printing what someone else does not want printed; everything else is public relations.
http://quoteinvestigator.com/2013/01/20/news-suppress/