| ncccusa.org | National Council of Churches of Christ in the USA |
| jalb.de | Leuenberg Church Fellowship |
| wheaton.edu | Institute for the Study of American Evangelicals |
| usccb.org | United States Conference of Catholic Bishops |
| kolping.org | Catholic Kolping Society of America |
| anglican.org | The Episcopal Church |
| anglicanpck.org | Anglican Province of Christ the King |
| aiccs.org | Association of Independent Christian Colleges and Seminaries |
| aacc-ceta.org | All Africa Conference of Churches |
| faithweb.com | Couturier Links of Ecumenical Friendship |
United States , California , San Francisco