Overview

• Full name: Herbert Nelson
• Age at disappearance: 26 years old
• Date last seen: January 1, 1979, as recorded in secondary missing-person listings
• Last known location: Dixon, California
• County and state: Solano County, California
• Case classification: Missing person; no verified homicide classification
• Current status: Unresolved in the publicly accessible records reviewed
• NamUs reference: MP40366, reported by secondary databases
• Physical description: Male, American Indian/Alaska Native identification in a secondary listing; black hair, brown eyes, approximately 5 feet 8 inches to 5 feet 10 inches tall, and approximately 180 pounds
• Circumstances: Nelson was reported missing in 1979. Publicly available summaries do not establish the events immediately preceding his disappearance.

The identifying details and reference number above are reported by SpotCrime’s missing-person listing and CaseTrace’s Dixon directory. They should not be mistaken for a fully verified original investigative report.

Detailed Case Breakdown

Herbert Nelson: The Unsolved 1979 Disappearance of a 26-Year-Old Man in Dixon, California

In January 1979, 26-year-old Herbert Nelson disappeared in connection with Dixon, California. More than four decades later, his whereabouts remain unknown in the publicly accessible missing-person records located for this article.

Nelson’s case has received little readily discoverable news coverage, and important questions remain about the circumstances surrounding his disappearance. Available records identify his last-seen date as January 1, 1979, but do not establish what he was doing that day, who last saw him, or why he disappeared.

His disappearance is documented in missing-person listings that reference the National Missing and Unidentified Persons System (NamUs). Those records provide identifying details but little investigative history.

Case Summary

• Full name: Herbert Nelson
• Age at disappearance: 26 years old
• Date last seen: January 1, 1979, as recorded in secondary missing-person listings
• Last known location: Dixon, California
• County and state: Solano County, California
• Case classification: Missing person; no verified homicide classification
• Current status: Unresolved in the publicly accessible records reviewed
• NamUs reference: MP40366, reported by secondary databases
• Physical description: Male, American Indian/Alaska Native identification in a secondary listing; black hair, brown eyes, approximately 5 feet 8 inches to 5 feet 10 inches tall, and approximately 180 pounds
• Circumstances: Nelson was reported missing in 1979. Publicly available summaries do not establish the events immediately preceding his disappearance.

The identifying details and reference number above are reported by SpotCrime’s missing-person listing and CaseTrace’s Dixon directory. They should not be mistaken for a fully verified original investigative report.

Herbert Nelson’s Background and Disappearance

Who was Herbert Nelson?

Herbert Nelson was a young man whose disappearance is associated with Dixon, a city in Solano County in Northern California. According to the available missing-person listings, he was 26 years old when he went missing in 1979.

A secondary database describes Nelson as an American Indian man of Alaska Native ethnicity, with black hair and brown eyes. It lists his height as between 5 feet 8 inches and 5 feet 10 inches and his weight as approximately 180 pounds.

These identifying characteristics may be useful when comparing historical missing-person records or reviewing potential identifications. However, a person’s appearance can change over time, and the accuracy of older descriptive records may vary.

Little verified biographical information about Nelson is publicly available. The reviewed sources do not establish his occupation, family relationships, educational background, or whether he lived permanently in Dixon.

Those gaps are significant. Without reliable historical reporting or family statements, it would be inappropriate to construct a personal history that the available evidence does not support.

January 1, 1979: The reported last-seen date

Both CaseTrace and SpotCrime associate Nelson’s disappearance with January 1, 1979, in Dixon, California.

Neither listing provides a detailed account of the final known sighting. The available information does not establish whether Nelson disappeared from a residence, workplace, vehicle, public location, or while traveling.

The sources also do not explain whether January 1 represents a documented eyewitness sighting, the date a missing-person report was opened, or a standardized date used in an older record.

Until an original investigative document establishes that distinction, January 1, 1979, should be treated as the recorded last-seen date rather than a fully reconstructed timeline of Nelson’s final movements.

No verified information was located establishing what Nelson was wearing, whether he had transportation, or whether personal belongings were recovered.

Investigation History and Available Evidence

Missing-person records

Nelson’s disappearance appears in public missing-person directories, including CaseTrace, which associates his record with NamUs case 40366.

SpotCrime separately displays the reference MP40366 and identifies Dixon as the last-seen location.

The matching numerical reference suggests that these listings draw from the same underlying missing-person record. However, the original NamUs case page was not independently verified during this research, so the number is presented as a secondary-source reference rather than an independently confirmed official case identifier.

Searches and law enforcement activity

The publicly accessible material reviewed does not provide a documented account of the initial investigation.

In particular, no reliable case-specific information was located confirming organized ground searches, aerial searches, interviews with named witnesses, recovered physical evidence, or searches of particular properties.

This does not establish that investigators conducted no searches. It means that the available sources do not provide sufficient documentation to describe those efforts accurately.

The identity of the original investigating police or sheriff’s agency also remains unverified.

Physical and forensic evidence

No publicly documented physical evidence could be reliably connected to Nelson’s disappearance through the sources reviewed.

There were no verified reports located of recovered clothing, vehicles, personal belongings, fingerprints, or biological evidence associated with a specific investigative development.

Likewise, no case-specific public announcement was located confirming that Nelson’s disappearance has been advanced through DNA testing, forensic genealogy, or the identification of unidentified human remains.

The absence of publicly accessible information should not be interpreted as proof that law enforcement possesses no evidence.

Theories and Unresolved Questions

The limited public record leaves several possible explanations unexamined, but none can be presented as an established theory supported by documented case evidence.

A voluntary departure, an accident, a medical emergency, or criminal involvement are general possibilities that can arise in missing-person investigations. There is no verified information in the reviewed sources that specifically supports one of these explanations in Nelson’s case.

There is also no verified evidence establishing that Nelson was murdered or abducted.

Several important questions remain unanswered:

• What were Nelson’s last independently confirmed movements?
• Who reported him missing, and when was the report made?
• Was Dixon his residence, a travel destination, or simply the last recorded location?
• Were any witnesses interviewed or physical clues documented?
• Has his case been compared with unidentified-person records from California or other states?
• Does the original investigating agency retain historical reports or evidence that could clarify the circumstances?

These are unresolved research and investigative questions, not claims that particular evidence or witnesses exist.

Latest Publicly Available Investigative Updates

Case status as of October 18, 2026

A review of publicly accessible missing-person listings, California law enforcement resources, and indexed news material did not identify a confirmed recent investigative breakthrough involving Herbert Nelson.

Specifically, no verified public announcement was located documenting an arrest, criminal charges, newly identified suspect, DNA identification, discovery of Nelson’s remains, or official resolution of his disappearance.

No publicly confirmed recent developments were located.

Nelson’s information continues to appear in secondary missing-person directories, but the presence of a listing does not establish that investigators have recently reopened or actively reviewed the case.

The California Department of Justice maintains a missing-person search system and statewide resources for missing and unidentified individuals. Its database is not comprehensive, however, and the absence of a verified Nelson-specific entry from this research cannot establish that no official record exists.

Potential for renewed investigation

California’s Missing and Unidentified Persons Section assists law enforcement with comparisons involving physical descriptions, fingerprints, dental records, and other identifying information.

The state also operates a Missing Persons DNA Program that can compare genetic material from relatives or personal belongings with unidentified remains.

These investigative resources could potentially be relevant to a decades-old disappearance. There is no verified public information establishing that any particular method has been applied to Nelson’s case.

Confirming whether an original police report, biological reference samples, or historical evidence still exists would require information from the responsible investigative agency.

Conclusion: Herbert Nelson’s Disappearance Remains Unexplained

Herbert Nelson was only 26 when he was reported missing in connection with Dixon, California, in 1979. The limited public record has preserved his name, identifying characteristics, and a reported disappearance date, but it has not provided a reliable explanation of what happened to him.

There is no verified basis for declaring his disappearance a homicide, attributing responsibility to another person, or assuming that he voluntarily disappeared.

More than 47 years after his reported last-seen date, important details remain unavailable to the public. Historical records, firsthand information, and properly documented identification evidence could help clarify the circumstances.

Anyone with credible information about Nelson’s disappearance may contact the California Department of Justice at 1-800-222-3463. The Dixon Police Department can also be contacted at 707-678-7070, although its responsibility for Nelson’s original investigation has not been established.

Information should be provided directly to law enforcement rather than used to publicly accuse individuals or speculate about possible criminal involvement.

Herbert Nelson’s case deserves continued attention, careful documentation, and an evidence-based effort to establish what happened.