Amanda M Rivera: The October Dates and Place Descriptions
Official records preserve different dates and locations for the reported drop-off.
Abstract
California’s Department of Justice gives October 5, 1990, as Amanda M Rivera’s Date Last Seen and names La Mesa, California.2
The NamUs Date Descriptions
NamUs MP6575 uses Amanda Marie Rivera and lists October 5, 1990, in La Mesa as Date of Last Contact. Its narrative instead dates a Spring Valley drop-off October 10.1
Both NamUs and the state entry identify La Mesa Police Department case 9007714.1,2
The Police Flyer Account
A La Mesa Police Department flyer uses Amanda Marie Rivera and dates the Spring Valley drop-off October 5, near a friend’s home.3 The original statement is not reproduced.
Sourced Accounts and Questions
Here’s where you come in. Can you find the original dated account clarifying which date describes the drop-off?1,3
Can you establish what each place description records before combining them into one location or route?1,2,3
Keep sources and questions in a Research File in Almost Solved. Preserve each source’s wording while seeking that clarification.
Scope and Method
Original statements were not reviewed. The date and place differences do not establish conflicting witnesses, a verified route or a present outcome.
Prepared with AI assistance. Sources and references checked against the cited public materials. This paper is an original synthesis of the identified public sources; it does not reproduce article bodies, transcripts, or an investigative file.
Footnote References
- NamUs, MP6575 public record; reviewed November 2, 2026.
- California Department of Justice, Amanda M Rivera entry; reviewed November 2, 2026.
- La Mesa Police Department, Amanda Marie Rivera section of undated cold-case flyer; reviewed November 2, 2026.