From the OHS PC Database, derived from A Guide to North American Organbuilders by David H. Fox (Organ Historical Society, 1991) -

In Milan, Michigan; purchased organ supplies, c. 1980s; with Robert Noehren; active in service and rebuilding, 1991.

The first edition of A Guide to North American Organbuilders lists him as associated with Richard Houghton, American representative of Solid State Logic (British). It is not noted in the 1997 revision.

Sources:

• Michael Friesen
• A mailing list of purchasers of organ supplies compiled by several prominent firms.
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From the OHS PC Database, Builders Listing editor, May 21, 2016. -

Jerroll Adams, is an organ builder in Milan, Michigan; his firm was established by 1975, and is currently active in service and rebuilding (2016). He is a long time technician for the University of Michigan and worked from 2010 to 2013 on the Frieze Memorial Organ in Hill Auditorium rebuilding the console and releathering the entire organ of 120 ranks.

Source:

• University of Michigan, School of Music, http://www.music.umich.edu/departments/organ/Hill_Auditorium.htm, accessed April 9, 2017.