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think article needs updating
article currently indicates arden house is owned/used by columbia university.
however, article at http://www.nynjtc.org/news/2007/arden.html indicates property was sold to "open space institute" sometime on 2007.
OK; I knew Columbia was interested in selling the property as it was increasingly a management headache. I didn't realize that they had done so a while ago. Will edit appropriately. Daniel Case (talk) 15:13, 6 January 2010 (UTC)