Here's an obituary for Robert Hughes, the Australian art critic, who wrote for Time magazine from 1970 to the end of the century.
His best articles for Time are available in his book "Nothing If Not Critical". It's worth reading for his insight and his scathing views on some aspects of art.
He reached a wider audience in 1980 with a BBC series on modern art from the late 19th century onwards, called " The Shock Of The New" . Although there's no DVD, an updated version of the book accompanying the series is still available.
His most recent book (2011) was "Rome", a history of the city and its relation with Italian art. The historian Mary Beard panned it for historical inaccuracies, but I still thought it was a good read.