News The 2016 Top 200 Collectors: Introduction Four years ago, J. Tomilson Hill, vice chairman of the private equity firm the Blackstone Group, got a phone call from L.A.-based artist Mark Grotjahn, whose work Hill has collected in depth By The Editors of ARTnews Sep 6, 2016 10:00 am
News The 2009 ARTnews 200 Top Collectors Our 2009 list of the world's top collectors By ARTnews Jul 1, 2009 12:00 am
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