St. Paul, Minnesota, 1970s to at least 2017.
Philadelphia, Pennsylvania, 1864. Henry Wilkinson Knauff, Jr. (1835, Philadelphia:Germantown - 1921, Minnesota)
Markham, Ontario, Canada. Created 1990 by the merger of Artisan Organ Ltd. and The Classic Organ Company Ltd. (1976). Designs, builds, and sells electronic components for classical organs.
French Builder, most of whose work is in Japan. His sons Matthieu and Boris have taken over and relocated to Japan, where they are actively building and maintaining.
Ralph D. Page; Advanced Design Pipe Organs of Willow Grove, PA
Son of G. C. Klop, builds mechanical action organs with wood pipes, including continuo organs, chamber organs, and small church organs.
German born, 1690; Dresden, before 1733; Philadelphia, Pennsylvania, 1733; New York City, 1737; Bethlehem, Pennsylvania, 1747-1748; Nazareth, 1748-1762.
Boston, Massachusetts, 1936 - 2010
Noted for the restoration and maintenance of organs by E. & G. G. Hook, Hook & Hastings, and others of that style.
Troy, New York, from 1977. Business assets absorbed by Church Organ Sales, Inc. Delmar, NY in late 2018, and operates under that name as of January 1, 2021