From Builders editor, Stephen Hall, March 25, 2020. &mash;

Presumed to be a division of United Organ & Bell Co., Milwaukee, Wisconsin, 1950s & 1960s, moved to Wauwatosa, Wisconsin, c. 1980s.

Fox lists United Organ Co. of Wauwatosa, Wisconsin, but gives no further information.

Sources:

• One or more local directories of the place and period.
• Elizabeth Towne Schmitt.