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Research dossier · People & Ideas

Jerry Koosman

American baseball player (born 1942)

Correspondence, annotated notebooks and portrait silhouettes prepared for research
People and ideasInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJul 27, 2026
Entity authoritySource title only
Source-derived summary

Jerome Martin Koosman is an American former professional baseball pitcher. He played in Major League Baseball (MLB) for the New York Mets, Minnesota Twins, Chicago White Sox, and Philadelphia Phillies between 1967 and 1985. Koosman is best known as a member of the Miracle Mets team that won the 1969 World Series.

Editorial summary

This brief starts where responsible research should: with the source description of “Jerry Koosman” as american baseball player (born 1942). Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA productive starting point for separating a subject’s documented career from later reputation and commemoration. The current lead gives the account dated anchors—1967, 1985, 1969—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where Jerry, Koosman and American can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the people & ideas register because the source frames it as american baseball player (born 1942). Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

The entry’s evidential value lies in the named roles, institutions and publications that can be tested against primary documentation. The source revision retrieved here is dated Jul 27, 2026. The first chronological checks are 1967, 1985 and 1969.

Critical limits

Later biographies can compress uncertainty and repeat inherited reputations, so apparently settled claims may still require comparison. 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

Read biographical claims against dates, named institutions and the cited references. Distinguish a subject’s later reputation from evidence produced during their lifetime.

Best used for
  • Establishing names and roles
  • Building a first chronology
  • Locating cited institutions
Verify next

Personal papers, civil or court records, institutional files and the scholarship cited by the source.

Three-step research path

  1. Establish the record: confirm the title “Jerry Koosman”, its source revision and the description used here.
  2. Expand the search: follow Jerry Koosman primary sources, Jerry Koosman archive and Jerry 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 “Jerry Koosman”?
  2. Which claims depend on a single source or contested interpretation?
  3. Which primary records establish identity, chronology and institutional ties?
Subject index

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Source & attribution

This entry incorporates text from “Jerry Koosman” 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.