found: His The Paris of Henri IV, c1990:CIP t.p. (Hilary Ballon) galley (asst. prof. of Art History, Columbia Univ.)
found: Louis Le Vau, 1999:CIP t.p. (Hilary Ballon) data sheet (b. 1955)
found: New York times, viewed September 18, 2017:paid death notice published June 17, 2017 (Ballon, Hilary; died June 16, 2017, aged 61; B.A. with High Honors from Princeton and her Ph.D from M.I.T.; Senior Advisor to the Mellon Foundation, University Professor at NYU, and Deputy Vice Chancellor of NYU Abu Dhabi; had been at Columbia University for 22 years) - http://www.legacy.com/obituaries/nytimes/obituary.aspx?pid=185828733
found: MIT School of Architecture + Planning WWW site, viewed September 18, 2017:memorial notice (Hilary Ballon, 1956-2017)