All journalism organisations worth their salt have a newsroom diary. Usually looked after by the news editor, it is the place where a record is kept of upcoming events press conferences, court hearings, performances, sports fixtures, anniversaries and election dates that are public knowledge. And from this font of public knowledge springs the diary story. The research for Daviess book led to a paper published in journalism practice by Cardiff University's Justin Lewis, Andrew Williams and Bob Franklin (2008), which attempted to take a more measured view of the influence the PR industry has on the news agenda. One of the most treasured possessions of any journalist is their contacts book, in which sources phone and mobile numbers, addresses, email and website details are listed. Some theoreticians divide journalism sources into two major categories: primary definers and secondary definers. Sources are often defined according to their relation to journalistic routines of news gathering.