The Rev. Roswell P. Barnes, a leader of the ecumenical movement who headed the United States Conference of the World Council of Churches, has died of heart disease. He was 89.
Mr. Barnes, a Presbyterian, was a member of a dedicated group of Christian ecumenists who built the world organization of Protestant and Eastern Orthodox churches.
He served as associate general secretary of both the Federal Council of Churches from 1940 to 1950 and its successor, the National Council of Churches, from 1954 to 1958.
In 1958 he was appointed executive secretary of the World Council's United States Conference.