in Boston, True provided illustrations for magazines such as the Saturday Evening Post, Outing, Collier's Weekly, Scribners Magazine and Art and Progress, to name a few; and books such as Clarence E. Mulford's The Orphan, Robert Ames Bennet's Into the Primitive and epic poem The Song of the Indian Wars by John G. Neihardt. True created easel paintings throughout his life, depicting his beloved West and its peoples. In 1912, True sold Free Trappers, a large easel painting, to Anne Evans, daughter of then Governor Evans, which she installed as a mural at her mountain cabin. True then acquired contracts for murals in various branches of the Denver Public Library (1912–13). In March 1913, Frank Brangwyn asked True to return to London to work on his murals to decorate the Court of Abundance at the Panama Pacific International Exposition in San Francisco. In July 1914, True returned to US (just missing World War One) to install Brangwyn's murals. He also was hired by Union Oil to create a panorama and model for the company's exhibit at the same Exposition. (The Panama Pacific International Exhibition opened in February 1915. Brangwyn murals are now installed in the Herbst Theatre of the War Memorial Building in San Francisco.) True's career as a muralist began when he received his first big assignment in 1917 to paint eight panels for the Wyoming State Capitol, which he finished in 1918. The Senate and the House of Representatives chambers of the Wyoming State Capitol Building each contain four large murals by True. He began painting them during the summer of 1917. True created the four Senate murals for $500.00 each and the four House murals for $800.00 each. The murals depict various aspects of the culture, history, and industry of Wyoming. The murals in the Senate chamber are entitled "Indian Chief Cheyenne", "Frontier Cavalry Officer", "Pony Express Rider", and "Railroad Builders/Surveyors". The House murals are entitled "Cattlemen", "Trappers", "Homesteaders", and "Stagecoach". He later painted 16 murals for the Missouri State Capitol (1922–25) and eight murals for the Colorado State Capitol (1934–40). He also painted murals in many public buildings in Denver, Colorado, including Mountain States Telephone & Telegraph (now Qwest), US National Bank (destroyed), Children's Hospital (in storage), Colorado National Bank (now owned by Stonebridge Cos which has turned the building into a Marriott Renaissance hotel), South High School, Steele Elementary School, and the Greek Theatre and