Dorothy Suzanne Carter, 29, vanished from Lawrence, Massachusetts, on June 3, 1981. The last confirmed contact was a collect call that day to her daughter, asking if she wanted anything from McDonald’s; her stepfather was to bring it home. Dorothy never showed up for a planned meeting with her ex-husband about their daughter’s living arrangements.

Her apartment showed no signs of a struggle. Only a clock radio and the clothes she had been wearing were missing. Her Social Security number had not been used since 1979. She was reportedly last seen with a man described as possibly of Puerto Rican descent, though details of that sighting are unclear. Dorothy had a history of alcoholism and serious health problems, including large scars from a hysterectomy for cancer at about age 26 and a fractured femur from a 1978 accident. No missing persons report was filed for years, and investigators have been unable to develop concrete leads.

Did anyone in the Lawrence area remember Dorothy, the man seen with her, or the clock radio she was missing?