George Koether (1907–2006) was a journalist, speechwriter, businessman, lecturer, economist, a friend to Ludwig and Margit von Mises, and a longtime ambassador for Misesian economics. See this post on the Mises blog written at the time of his death.
Ludwig von Mises: "Marx and Engels never tried to refute their opponents with argument. They insulted, ridiculed, derided, slandered, and traduced them, and in the use of these methods their followers are not less expert. Their polemic is directed never against the argument of the opponent, but always against his person." - Socialism