41. 1984 : Cofounder Lila Acheson Wallace dies at 94 42. Survivors include his wife, Mary Acheson Bundy, three children and three grandchildren. 43. Acheson gave a similar account to the judge.44. T . W . Acheson is one of the main proponents of this theory. 45. Marshall, Bradley, Acheson and Harriman met with Truman again on 9 April. 46. Acheson patented the method for making silicon carbide powder on February 28, 1893.47. In 1949 Keyserling gained support from powerful Truman advisors Dean Acheson and Clark Clifford. 48. Johnson's obstinate attitude toward the Secretary of State Dean Acheson and Truman. 49. He tied for second in points with Kenneth Acheson , each with 95 points. 50. The case was successfully argued by former Truman Administration Secretary of State Dean Acheson .