The person at the center of this case
Steven Anderson (age 17 at disappearance)
Missing Person · Open
51 years waiting · since 1975
STEVEN ANDERSON
Justice for Steven Anderson (age 17 at disappearance) — the trail went cold in 1975, but the truth hasn't.
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Key leads to think about
👤
person
Lead #1What happened to David Williams, Steven's 12-year-old roommate, who disappeared with him?
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witness
Lead #2Did staff members at the facility see or hear anything unusual after the boys left the ball field?
📍
location
Lead #3Why were two boys with developmental disabilities allowed to walk unsupervised from the ball field?
Steven Anderson, age 17, and his roommate David Williams, age 12, disappeared on April 7, 1975, from the New Lisbon State School in New Jersey while walking back from a ball field. Both boys had developmental disabilities and required supervision, making their sudden disappearance highly suspicious. Despite nearly five decades of investigation, their fate remains unknown, and the FBI continues to seek information that could explain what happened to them that afternoon.
Case
#271
Federal Bureau of Investigation (FBI) - Newark Field Office
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More leads to consider
Beyond the top three above — each detail below could be the thread that pulls this case open.
💡
clue
Lead #4Steven had a chipped front tooth and trouble communicating—could distinctive physical features help identify remains if discovered?
🔍
evidence
Lead #5Were the boys' blue hooded jackets and pants ever recovered or investigated?
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Even the smallest detail could be the key to solving this case.
Official wording
Source Narrative
April 7, 1975 New Lisbon, Burlington County, New Jersey Steven Anderson, then age 17, and David Williams , then age 12, were reported missing from the New Lisbon State School, now called the New Lisbon Developmental Center, located in Burlington County, New Jersey, on April 7, 1975. Both boys lived at the 1,896-acre center located off Route 72 in the New Jersey Pinelands.
They had diagnosed developmental disabilities and were unable to care for themselves without supervision. The boys, who were roommates, were last seen at approximately 4:15 p.m., walking towards their residence from a nearby ball field where they had been playing with staff members.
Remarks: Steven had a chipped front tooth. He was known to have trouble communicating.
Steven was last seen wearing a blue hooded jacket and blue pants.
Timeline of Events
👁️
1975-04-07
16:15Last sighting of Steven Anderson and David Williams
Both boys were last seen at approximately 4:15 p.m. walking towards their residence from a nearby ball field where they had been playing with staff members.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:April 7, 1975 at 4:15 PM
Last Updated:July 23, 2026
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Case Information
Incident:April 7, 1975 at 4:15 PM
Last Updated:July 23, 2026