Mark A. Matthews (1867–1940) of Seattle's First Presbyterian Church was a leading city reformer, who investigated red light districts and crime scenes, denouncing corrupt politicians, businessmen, and saloon keepers. With 10,000 members, his was the largest Presbyterian Church in the country, and he was selected the national moderator in 1912. He built a model church, with night schools, unemployment bureaus, kindergarten, an anti-tuberculosis clinic, and the nation's first church-owned radio station. Matthews was the most influential clergymen in the Pacific Northwest, and one of the most active Social Gospelers in America.