| American guild of organists | The purpose of the American Guild of Organists is to promote the organ in its historic and evolving roles, to encourage excellence in the performance of organ and choral music, and to provide a forum for mutual support, inspiration, education, and certification of Guild members. |
| Associated Pipe Organ Builders of America | APOBA is a professional association of North American firms engaged in building traditional pipe organs. We are a select group of organ builders who uphold stringent construction principles. |
| American Institute of Organ Builders | Professional association of organ builders |
| Siqua Group Limited | Parent company of Wolcraft |
| LED (Light Emitting Diodes) | Wikipedia definition of LEDs |
