| Episcopal Church of the Advent, Crestwood, Missouri Fully alive to God and one another | ||
| Organ Historical Society North America's leading society for friends of the pipe organ | ||
| Episcopal Diocese of Missouri The Episcopal Church in eastern Missouri | ||
| The Domestic and Foreign Missionary Society ... better known as The Episcopal Church | ||
| Quimby Pipe Organs, Inc. Specialists in building, enlarging and restoring pipe organs | ||
| Early English Organ Project Rediscovering the sound of the 16th.-century organ | r | |
| Citizens for Modern Transit Working to expand the rail network in the St. Louis Metro area | ||
| Broad Gauge Society A society to promote research into and knowledge of Brunel's 7' 0¼" rail gauge | ||
| The British Institute of Organ Studies Britain's leading pipe organ society | ||
| Lois Fyfe Music One-stop shopping for sacred choral and organ music | ||
| Deerwood Music Useful resources for the small church |