Doe Network

409DFCA - Sylvia Lourdes Standley

Sylvia Lourdes Standley Sylvia Lourdes Standley Sylvia Lourdes Standley Sylvia Lourdes Standley Sylvia Lourdes Standley

Name: Sylvia Lourdes Standley
Case Classification: Endangered Missing
Missing Since: June 3, 1986
Location Last Seen: Modesto, Stanislaus County, California

Physical Description

Date of Birth: June 19, 1954
Age: 31 years old
Race: White
Gender: Female
Height: 5'7"
Weight: 115 lbs. to 140 lbs.
Hair Color: Light brown
Eye Color: Hazel
Distinguishing Marks/Features: Pierced ears. Scar above left knee in the shape of a V and about a 1/2 inch in size. Appendectomy scar on her stomach. A possible tattoo of a butterfly on her right hip.


Dentals: Available. Two front teeth missing.
Fingerprints: Available
DNA: Available

Clothing & Personal Items

Clothing: Unknown
Jewelry: Unknown
Additional Personal Items: Unknown

Circumstances of Disappearance

Sylvia Lourdes Standley (sometimes incorrectly reported as Standly), with the possible alias last name of Baca, walked out of Stanislaus County Women's Facility on Oakdale Road on June 3, 1986, after serving a two-week sentence for a drug violation. She called her family on June 6th to let them know she would be home later in the day and that she would catch a ride to her Modesto home with her new boyfriend, whom no one in her family knew. She was last seen getting into a green or blue truck.

Some sources list May 29th or June 6th as her date of disappearance.

Investigating Agency(s)

Agency Name: Modesto Police Department
Agency Contact Person: Detective Craig Grogan
Agency Phone Number: 209-572-9532
Agency E-Mail: GroganC(at)
Agency Case Number: 86-60922

NCIC Case Number: M212417495
NamUs Case Number: 17906

Information Source(s)

Stanislaus Area Crime Stoppers
Modesto Police Department
The Modesto Bee News Archive (2/25/2001)

Admin Notes

Added: Prior to 2011; Last Updated: 5/5/16

Submit an update to this case file.

Questions or comments? Please contact appropriate member of the Area Team

** Listed information is from the time of disappearance.

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