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J. Walter Thompson

one of the largest advertising agencies in the United States

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJun 15, 2026
Entity authorityQ1676726
Source-derived summary

J. Walter Thompson (JWT) was an advertisement holding company incorporated in 1896 by American advertising pioneer James Walter Thompson. The company was acquired in 1987 by multinational holding company WPP plc, and in November 2018, WPP merged J. Walter Thompson with fellow agency Wunderman to form Wunderman Thompson. In October 2023, WPP announced another merger, combining Wunderman Thompson with another group agency VMLY&R, to create the new entity VML. This took effect on March 1, 2026.

History

Pre-James Walter Thompson

J. Walter Thompson traces its origins to the Carlton & Smith agency, which opened its doors in 1864, one of the first known advertising agencies in the United States. Founder William James Carlton started selling advertising space in religious magazines, but almost nothing is known about the partner named Smith.

The New York Times wrote that "the agency traces its roots to a newspaper space brokerage that began operation on December 5, 1864."

1868–1969

In 1868, Carlton hired James Walter Thompson as a bookkeeper. Eventually, Thompson found that soliciting and sales were much more profitable, and he became a very effective salesman for the small company.

In 1877, Thompson purchased the business of his employer for $500 and, a year later, purchased the office furniture for $800. He changed the company designation to J. Walter Thompson, as he felt that James Thompson was too common a name in New York. One of his first clients was a personal friend – Robert Wood Johnson, one of the three brothers who founded Johnson & Johnson – for whom Thomson personally wrote advertising for the toothpaste brand Zonweis.

Editorial summary

Begin with the source’s own compact description: “J. Walter Thompson” is one of the largest advertising agencies in the United States. The dossier treats that line as a proposition to test through Walter, Thompson and largest, not as a finished interpretation.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1896, 1987, 2018, 2023—that can be checked directly. The linked authority record independently contributes the date 1864-01-01. For this dossier, Walter, Thompson and largest is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “one of the largest advertising agencies in the United States” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jun 15, 2026. The linked authority identifier is Q1676726. VIAF identifies the subject as 168744822. The Library of Congress control number is n50062749. 3 of 4 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1896, 1987, 2018 and 2023.

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.

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

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  1. Establish the record: confirm the title “J. Walter Thompson”, its source revision and the description used here.
  2. Expand the search: follow J. Walter Thompson primary sources, J. Walter Thompson archive and Walter 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

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Source & attribution

This entry incorporates text from J. Walter Thompson” 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.