Mother dies before daughter's killer found

The ailing Dolores Dustin kept two framed photographs of her murdered daughter Donna in the living room of her Bowie home.

One was a faded color portrait of the pretty 1970s teenager, her long brown hair parted in the middle. The other was a small black-and-white picture of newborn baby Donna blissfully asleep in her crib. 

Mrs. Dustin, 74, would relax with her oxygen tank in an easy chair facing the end table on which these pictures were displayed so she could always see them and remember Donna as she was.

But she was never to know the identity of the people who killed her "baby" in 1973. She died...