CA JOYCE ELIZABETH HARPER: Missing from Potrero, CA - January 1975 - Age 31


Well-known member

Joyce Harper went missing from Potrero, California sometime in January 1975. One of her daughters Kimberly Cozart vanished two years later from Julian, California. It's unknown whether the cases are related or not.

*Click the Report button on a case if you'd like it to be moved to the general discussion area to be opened for commenting.*

edited by staff to add media link
Last edited by a moderator:


Well-known member

Name: Joyce Elizabeth Harper
Case Classification: Endangered Missing
Missing Since: January 1, 1975
Location Last Seen: Potrero, San Diego County, California

Physical Description
Date of Birth: December 9, 1945
Age: 31 years old
Race: White
Gender: Female
Height: 5'3"
Weight: 120 lbs.
Hair Color: Brown
Eye Color: Brown
Nickname/Alias: Joyce Gann; Vivian Ann Maddux
Distinguishing Marks/Features: Her hair was shorter than collar length at the time of her disappearance.

Dentals: Not Available
Fingerprints: Not Available
DNA: Available
Clothing & Personal Items
Clothing: Unknown
Jewelry: Unknown
Additional Personal Items: Unknown

Circumstances of Disappearance

Harper was last seen on or about January 1, 1975. Her daughter reported her missing on December 15, 1995. Another of Harper's daughters, Kimberly Cozart, disappeared in February 1977 from Julian, California, and was reported missing on the same day as Harper. It is not known whether Harper's and Cozart's disappearances are related.

Investigating Agency(s)
Agency Name: San Diego County Sheriff's Department
Agency Contact: Homicide Detail
Agency Phone Number: 858-974-2321
Agency E-Mail:
Agency Case Number: 95-087100
NCIC Case Number: M844832083
NamUs Case Number: 18020


Well-known member

Joyce Elizabeth Harper

Missing Date: January 1975
Location: Potrero, CA

Synopsis: San Diego County Crime Stoppers and the San Diego County Sheriff’s Department’s Homicide Detail continue to look for leads in the 1975 disappearance of 31-year-old Joyce Elizabeth Harper.

Joyce Elizabeth Harper (aka: Joyce Gann; Vivian Ann Maddux) has been missing since 1975. She was last known to be living in Potrero, California. She was reported missing by her daughter on December 15, 1995.

At the time of her disappearance, Joyce Harper was 31 years old, 5’3” tall and weighed about 120 lbs. She had brown hair and brown eyes.

Anyone with information is asked to contact us in one of the following ways:

Forum statistics

Latest member