A handful of significant literary works and authors are associated with Jacksonville and the surrounding area. Perhaps the most important is James Weldon Johnson, who moved North and was influential in the Harlem Renaissance. In 1920 he also became the first African American to lead the NAACP civil rights organization. His first success as a writer was the poem "Lift Ev'ry Voice and Sing" (1899), which his brother Rosamond Johnson set to music; the song became unofficially known as the "Negro National Anthem."