	After graduating from seminary school in 1900, Boone began his missionary work. He and his wife Eva traveled to the Congo Free State in 1901 to serve. They were sponsored jointly by the Lott Carey Foreign Mission Convention and the American Baptist Missionary Union. They arrived at the Palaballa station in the Katanga province of the Congo on May 24 of the same year. The territory was then under the personal rule of the Belgian king.