Good speechwriters should be neither seen nor heard says Warren H. “Sandy” Anderson, an executive speechwriter who wrote for President Gerald R. Ford. But Ted Sorensen’s talent made him an exception.
Sorensen died in 2010. He was the last survivor of Kennedy’s administration. Here is how the New York Times reported on his death http://www.nytimes.com/2010/11/01/us/01sorensen.html?pagewanted=1&_r=0