Peak era thumb|right|An ad asking automakers to place ads in Hearst chain, noting their circulation In the 1920s and 1930s, Hearst owned the biggest media conglomerate in the world, which included a number of magazines and newspapers in major cities. Hearst also began acquiring radio stations to complement his papers. Hearst saw financial challenges in the early 1920s, when he was using company funds to build Hearst Castle in San Simeon and support movie production at Cosmopolitan Productions. This eventually led to the merger of the magazine Hearst International with Cosmopolitan in 1925.
Peak era thumb|right|An ad asking automakers to place ads in Hearst chain, noting their circulation In the 1920s and 1930s, Hearst owned the biggest media conglomerate in the world, which included a number of magazines and newspapers in major cities. Hearst also began acquiring .radio stations to complement his papers Hearst saw financial challenges in the early 1920s, when he was using company funds to build Hearst Castle in San Simeon and support movie production at Cosmopolitan Productions. This eventually led to the merger of the magazine Hearst International with Cosmopolitan in 1925.