Crime Solvers Central
Crime Solvers Central
298 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

Any updates on this case? Let us know!
Summary based on the NamUs case record (MP77659) and 4 other sources
Robert William Trapp, aged 56, was last heard from on December 15, 1965, in Stockton, California. Trapp, who didn't often stay in close contact with his family, was known for sending Christmas cards each year without fail. The last card he sent was dated December 15, 1965. When his family didn't receive a card in 1966, they initially assumed he may have forgotten. However, by 1967, with no further contact, they became concerned something was wrong.

Trapp is described as a Caucasian male, 5'10" to 5'11" tall, weighing between 160 and 180 pounds, with red hair and blue eyes. He also had a scar on his forehead. Despite his family's efforts to search for him, little information is available about the circumstances of his disappearance, and his case remains unsolved. The Stockton Police Department continues to investigate, but there have been no major developments since his last known contact.

The lack of clues surrounding his disappearance has kept his case open for decades, and anyone with information is encouraged to reach out to the authorities.

Last Seen: Dec 15, 1965

Possible Unidentified Matches (10)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

80%Moderate
John Doe — San Francisco, California
UP5893 • Found Nov 23, 1982
View case
Sex ✓Male
Age 100%Est. 60–70 vs 56 when missing
Race 100%White
Location 86%63 mi away, same state
TimingFound 17 years after last seen
Height 100%5'10" vs 5'10"–5'11"
Weight 96%200 lb vs 160–180 lb
Hair 70%Gray vs Red
Eyes 100%Blue vs Blue
78%Possible
John Doe — San Rafael, California
UP17761 • Found Nov 25, 1979
View case
Sex ✓Male
Age 100%Est. 55–65 vs 56 when missing
Race 100%White
Location 84%68 mi away, same state
TimingFound 14 years after last seen
Height 100%5'10" vs 5'10"–5'11"
Weight 100%185 lb vs 160–180 lb
Hair 70%Gray vs Red
78%Possible
John Doe — San Francisco, California
UP5913 • Found Feb 13, 1986
View case
Sex ✓Male
Age 100%Est. 60–70 vs 56 when missing
Race 100%White
Location 86%63 mi away, same state
TimingFound 20 years after last seen
Height 100%5'9" vs 5'10"–5'11"
Weight 100%175 lb vs 160–180 lb
Hair 70%Gray vs Red
78%Possible
John Doe — Brentwood, California
UP12491 • Found Sep 14, 1985
View case
Sex ✓Male
Age 100%Est. 50–60 vs 56 when missing
Race 100%White
Location 97%22 mi away, same state
TimingFound 20 years after last seen
Height 100%5'10" vs 5'10"–5'11"
Hair 70%Gray vs Red
78%Possible
John Doe — Novato, California
UP12019 • Found Jul 10, 1966
View case
Sex ✓Male
Age 100%Est. 55–65 vs 56
Race 100%White
Location 82%75 mi away, same state
TimingFound 7 months after last seen
Height 84%6'1" vs 5'10"–5'11"
Weight 100%170 lb vs 160–180 lb
Hair 50%Brown vs Red
Eyes 0%Brown vs Blue
77%Possible
John Doe — Berkeley, California - unidentified case UP12992
John Doe — Berkeley, California
UP12992 • Found Nov 2, 2010
View case
Sex ✓Male
Age 100%Est. 50–60 vs 56 when missing
Race 100%White
Location 88%53 mi away, same state
TimingFound 45 years after last seen
Height 100%6'0" vs 5'10"–5'11"
Weight 69%117 lb vs 160–180 lb
Hair 70%Gray vs Red
Eyes 100%Blue vs Blue
77%Possible
John Doe — Sacramento, California
UP12971 • Found Dec 20, 1983
View case
Sex ✓Male
Age 85%Est. 50–70 vs 56 when missing
Race 100%White
Location 92%41 mi away, same state
TimingFound 18 years after last seen
Height 100%5'9" vs 5'10"–5'11"
Weight 100%148 lb vs 160–180 lb
Hair 70%Gray vs Red
77%Possible
John Doe — San Francisco, California
UP5898 • Found Dec 18, 1983
View case
Sex ✓Male
Age 85%Est. 50–75 vs 56 when missing
Race 100%White
Location 86%63 mi away, same state
TimingFound 18 years after last seen
Height 100%5'10" vs 5'10"–5'11"
Weight 100%165 lb vs 160–180 lb
Hair 70%Gray vs Red
Eyes 100%Blue vs Blue
76%Possible
John Doe — Sausalito, California
UP12220 • Found May 15, 2013
View case
Sex ✓Male
Age 100%Est. 45–60 vs 56 when missing
Race 100%White
Location 85%65 mi away, same state
TimingFound 47 years after last seen
Height 100%6'0" vs 5'10"–5'11"
Weight 100%180 lb vs 160–180 lb
76%Possible
John Doe — San Francisco, California
UP5945 • Found Apr 29, 1996
View case
Sex ✓Male
Age 85%Est. 55–75 vs 56 when missing
Race 100%White
Location 86%63 mi away, same state
TimingFound 30 years after last seen
Height 100%5'11" vs 5'10"–5'11"
Weight 100%180 lb vs 160–180 lb
Hair 70%Gray vs Red
Eyes 100%Blue vs Blue

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.