The centre preserved and promoted the histories and values of the newspapers through its archive , educational programmes and exhibitions .
The Guardian and its sister newspaper The Observer opened The Newsroom , an archive and visitor centre in London , in 2002 .
The centre preserved and promoted the histories and values of the newspapers through Guardian 's archive , educational programmes and exhibitions .
The Guardian and its sister newspaper The Observer opened The Newsroom , an archive and visitor centre in London , in 2002 .