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.

Brian Berghaus, son of founder Len Berghaus, grew with the company and eventually became its Vice President in 1999 and President in 2004. To mark the new era of Berghaus organs, the name of the firm was officially changed to Berghaus Pipe Organ Builders Inc. around this time. [Source: from builder website]