From the OHS PC Database, derived from A Guide to North American Organbuilders, rev. ed. by David H. Fox (Organ Historical Society, 1997) -

Established by Leonard G. Berghaus in Melrose Park, Illinois, 1967; relocated to Bellwood, Illinois, as Berghaus Organ Co., 1973; incorporated 1977; active in 2015.

Staff: George Anderson, Frederick L. Beal, Brian Berghaus, Todd Berghaus, Dean Christian, Peter Duys, Gary Foxe, Jeffrey Hammes, Allyn Hoverland, Daniel Jaeckel, Bill Kaffenberger; Fred Lake, Louis E. Patterson, Mike Pelton; John F. Shawhan; Jordan Smoots, Paul Szymkowski, Gerrit Verkade.

Sources:

• Leonard G. Berghaus.
• Michael Friessen.
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From the OHS PC Database Builders Listing editor, Mar 20, 2016 -

Active in 2015 as Berghaus Pipe Organ Builders, Inc. Brian Berhhaus, son of Leonard Berghaus, listed as president. The firm builds electric key-action instruments using electric slider chests. Most of their work is in the Mid-West region, but they have instruments in the Arizona, Louisiana, Florida, and Maryland as well. There is an emphasis on strong visual design in their instruments.

Professional associations:

• American Institute of Organbuilders (AIO)
• Association of Pipe Organ Builders of America (APOBA)
• International Society of Organ Builders (ISO)
• Organ Historical Society (OHS)

Source:

• Berghaus Pipe Organ Builders, Inc. website, accessed Nov 15, 2015.