CACrown ArchivesThe cinema collection
Menu
Research dossier · General Reference

Mexican Joe Rivers

American boxer (1892-1957)

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 8, 2026
Entity authorityQ6825941
Source-derived summary

Mexican Joe Rivers (born Jose Ybarra, March 19, 1892 – June 26, 1957) was an American boxer in the lightweight class whose ring career lasted from 1910 to 1923.

Early life

Rivers was born in Los Angeles on March 19, 1892, to Andrew Ybarra and Mary Estrada. He was a fourth generation Californian. He was an indigenous American.

Boxing Career

Rivers began performing under the last name Rivers after a ring announcer, failing to understand his last name, asked Rivers was from. As Rivers replied "down the river", the announcer opted to introduce him as Joe Rivers.

On February 22, 1911, he defeated Jimmy Reagan, a former Bantamweight World Champion by a technical knockout in the thirteenth round of a scheduled twenty. Reagan took a "terrific beating" and was knocked down four times prior to the thirteenth round. During the round, he was knocked down twice more by Rivers before the fight was called by the referee. The bout took place in the Vernon Arena in Vernon, California, in Los Angeles County.

Editorial summary

The public source identifies “Mexican Joe Rivers” as american boxer (1892-1957). This brief keeps that definition visible, then builds a research path around Mexican, Rivers and American.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—1892, 1957, 1910, 1923—that can be checked directly. The linked authority record independently contributes the date 1892-03-19. Its value is orientation rather than verdict, with Mexican, Rivers and American providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “Mexican Joe Rivers”, the useful work is to connect “american boxer (1892-1957)” to the records capable of establishing context and consequence.

Evidence profile

The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 8, 2026. The linked authority identifier is Q6825941. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1892, 1957, 1910 and 1923.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Mexican Joe Rivers”, its source revision and the description used here.
  2. Expand the search: follow Mexican Joe Rivers primary sources, Mexican Joe Rivers archive and Mexican research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Mexican Joe Rivers”?
  2. Which institution is responsible for the underlying evidence?
  3. What terminology or title could unlock a more precise catalogue search?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from Mexican Joe Rivers” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.