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WikiPedia: Christie's http://www.blouinartinfo.com/market-news/article/3... http://christies.com http://www.christies.com/about/locations/ http://www.christies.com/features/welcome/ http://www.economist.com/node/16267901 http://www.ft.com/cms/s/70d74b86-c386-11e5-808f-82... http://nymag.com/news/intelligencer/48004/ http://www.nysun.com/arts/auction-houses-vs-dealer... http://observer.com/2011/09/flanking-the-competiti... http://theartnewspaper.com/articles/Battle+for+pri...