J. Walter Thompson
one of the largest advertising agencies in the United States

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.
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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.