In late 1918, Robert R. McCormick returned to the United States after serving with the American Expeditionary Force in France. His wartime service helped shape his public image as “Colonel McCormick,” a name that later became closely linked to the Chicago Tribune in the interwar years. This transition set the stage for the paper’s strong, personality-driven leadership in the 1920s and 1930s.
In 1919, McCormick and his cousin Joseph Medill Patterson established the New York Daily News. The venture showed how Tribune leaders were thinking beyond a single-city newspaper toward a larger media business. It also helped define a strategy of expansion that continued through the interwar period.
Northwestern University dedicated the Medill School of Journalism on February 8, 1921, with backing tied to the Chicago Tribune and McCormick. The school’s creation reflected a growing belief that journalism could be taught systematically, not just learned on the job. It also strengthened the Tribune’s influence on professional training for Midwest journalists during the interwar era.
In 1922, on its 75th anniversary, the Chicago Tribune announced an international architecture competition for a new headquarters building. The contest was widely publicized and drew major designers, turning a newspaper business decision into a cultural event. It also signaled the Tribune’s intention to present itself as a national-scale institution during the 1920s boom.
On June 1, 1924, the Chicago Tribune acquired the radio station WDAP and changed its call letters to WGN, based on the Tribune’s “World’s Greatest Newspaper” motto. This move connected print journalism to a fast-growing broadcast medium, expanding the Tribune’s regional reach. It also helped define how large city newspapers could build cross-platform influence in the interwar period.
In 1925, McCormick became the sole editor and publisher of the Chicago Tribune, ending the earlier period of shared leadership with Joseph Medill Patterson. With control concentrated in one person, the paper’s editorial voice became more consistently aligned with McCormick’s conservative politics and business priorities. This leadership structure shaped the Tribune’s distinctive interwar identity.
The Tribune Tower was completed in 1925 and became the home base associated with the newspaper and its related operations. The building linked the Tribune brand to a highly visible downtown landmark and reinforced the company’s long-term presence along North Michigan Avenue. As a civic symbol, it also blended journalism, architecture, and corporate identity in the interwar city.
On June 1, 1931, the U.S. Supreme Court decided Near v. Minnesota, a landmark ruling that struck down a state “gag law” used to block publication in advance (a practice often called prior restraint). The case became a foundational press-freedom precedent and was argued for the publisher by attorney Weymouth Kirkland. The decision mattered to major newspapers, including the Tribune, because it strengthened legal protection for publishing controversial material.
In 1932, the Pulitzer Prizes recognized Chicago Tribune cartoonist John T. McCutcheon for the editorial cartoon “A Wise Economist Asks a Question.” The award highlighted how the Tribune’s influence was not only in reporting and editorials, but also in visual commentary that interpreted the Great Depression for readers. It helped cement the paper’s reputation for high-impact front-page and opinion-page presentation.
Beginning in early 1934, the Chicago Tribune adopted a set of “simplified” spellings (such as “thru” and “tho”) as part of its house style. The change reflected McCormick’s interest in shaping language and presentation, not just covering events. It also showed how a major regional paper could use consistent style choices to signal identity and modernity to a mass readership.
In 1936, Baie-Comeau (on Quebec’s Côte-Nord) was founded around a paper mill project constructed by Robert R. McCormick to support newsprint supply for the Chicago Tribune. The move was part of a broader strategy to secure raw materials and reduce dependence on outside suppliers. This kind of vertical integration helped large newspapers manage costs and scale during the interwar years.
In 1936, the Pulitzer Prize for Correspondence went to Chicago Tribune correspondent Wilfred C. Barber for reporting on the war in Ethiopia (Second Italo-Ethiopian War). The award, given posthumously, underscored that the Tribune’s interwar influence included international reporting, not only Chicago politics. It also reflected readers’ growing demand for foreign news as global tensions rose in the 1930s.
On December 4, 1941, the Chicago Tribune ran a major front-page story by correspondent Chesly Manly headlined “F.D.R.’S WAR PLANS!” about the secret Rainbow Five/Victory Program planning assumptions. The publication intensified political conflict between interventionists and isolationists by suggesting the U.S. government was preparing for large-scale war before the Pearl Harbor attack. It became one of the best-known examples of how interwar-era newspaper influence could collide with national security concerns.
Chicago Tribune in the interwar period and the Ledger influence (1918-1941)