FILE - In this June 18, 1972 file photo, human sexuality researchers William H. Masters, M.D., and his wife, Dr. Virginia Johnson Masters, pose for a photo in San Francisco. Virginia Johnson's son, ... more 
FILE - In this June 18, 1972 file photo, human sexuality researchers William H. Masters, M.D., and his wife, Dr. Virginia Johnson Masters, pose for a photo in San Francisco. Virginia Johnson's son, Scott Johnson, says his mother died Wednesday, July 24, 2013, at a St. Louis assisted living center. She was 88. (AP Photo/File) less 
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Associated Press | Photo By File
Thu, Jul 25, 2013 12:13 PM EDT