The New York Times article (May 12, 2015)

obituary in the New York Times

obituary in the New York Times

The New York Times article (December 28, 2016)

The New York Times article (August 7, 2015)

The New York Times article (July 22, 2014)

The New York Times article (December 12, 2014)

obituary in the New York Times

The New York Times article (November 1, 2017)

The New York Times article (July 29, 2010)