From the OHS Database Builders Listing Editor, April 7, 2016. -

Established by Michael L. Bigelow in Provo, Utah, 1978; in American Fork, Utah, 1984; active in 1995.¹ The firm specializes in tracker action instruments, and is noted for its Either/or System whereby stops can be registered on either one manual or the other. This allows a small tracker instrument to have its resources available on two manuals while using a single chest. Although the majority of its opus list are two manuals of less than 12 ranks, the firm has built three manual instruments of up to 50 ranks.²

Staff: Bruce Fowkes, David Chamberlain.

Sources:

1. David Fox, "M. L. Bigelow & Co.", A Guide to North American Organbuilders, rev. ed. (Organ Historical Society, 1997), p72.
2. M. L. Bigelow & Co. website, http://www.bigeloworgans.com/home.aspx. Accessed April 7, 2016.