The state song, "Washington, My Home," was written by Helen Davis, arranged by Stuart Churchill, and was adopted as the official state song on March 19, 1959. It had some stiff competition from another popular song. Back in 1909, "Washington Beloved" was adopted, sort of, by the Legislature. Professor Edmond Meany, the historian, wrote the words and Reginald de Koven, who also wrote "O Promise Me" and other operettas, wrote the music. But this song was never formally introduced as a bill and so was not part of the state's code of law. When a state senator from South Bend introduced a bill in 1959 to make "Washington, My Home" the state song, it was approved unanimously.
From the description of Washington, my home : official song of the State of Washington, 1958? / [words and music] by Helen Davis ; arrangement, Stuart Churchill. (Washington State Library, Office of Secretary of State). WorldCat record id: 435532609