When did the parents of Richard and Karen carpenter pass away?

Richard Lynn and Karen Anne Carpenter's father was:

Harold Bertram Carpenter, and he lived from Nov. 8, 1908 to Oct. 15, 1988. Richard Carpenter was born on Oct. 15, 1946.

Their mother was:

Agnes Reuwer Tatum Carpenter, and she lived from March 5, 1915 to November 10, 1996. Karen Carpenter was born on March 2, 1950 and lived until February 4, 1983.