a company that manufactured high-precision lenses for astronomical, industrial, and medical applications. Knight stayed with Questar for the next three decades, coming to be the owner of the company when its previous owner Marguerite Braymer died in 1996. In 2001, Knight sold Questar to Donald Bandurick but stayed on as a consultant throughout his brief retirement. Authorship Douglas Knight is the author of several published books as well as many other scholarly articles and letters. See the table below for a complete list of his works. Death Douglas Knight died in Doylestown, Pennsylvania, on Sunday, January 23, 2005, from complications arising from pneumonia. His wife, Grace Nicholas Knight—an extraordinary woman in her own right, died in 2008. He is survived by his four sons, Christopher, Douglas Jr., Thomas, and Stephen. References External links Preliminary Inventory of the Douglas M. Knight Records, University Archives, Duke University 1921 births 2005 deaths Presidents of Duke University Presidents of Lawrence University Yale University alumni 20th-century American academics