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

Partnership of Allen B. Kinzey and Daniel L. Angerstein in Wrentham, Massachusetts, 1971-1981; succeeded by Kinzey's Nicholas-Bradford Organ Co. and Angerstein Associates.

Source:

• Letter to David Fox
•  

From the OHS PC Database Builders Listing editor, Mar 7, 2016 -

Kinzey-Angerstein was a partnership of Allen B. Kinzey and Daniel (Dan) L. Angerstein in Wrentham, Massachusetts, from 1971 until 1981. Both men were with the Aeolian-Skinner Organ Co. of Boston, MA prior to its closing. The two established a small firm, building tracker action instruments and servicing and rebuilding electro-pneumatic ones, primarily those built by Aeolian-Skinner. Most of their work was in the New England area, but they worked on Aeolian-Skinner organs around the country. They also built three new instruments in Gainesville, Florida and rebuilt the Schantz organ at the First Presbyterian Church there.¹

After the partnership closed, Kinzey established Nicholas-Bradford Organ Co of Wrentham, MA in conjunction with Joseph N. Deptula, Jr. in 1981.² Angerstein established Angerstein & Associates of Stoughton, in 1983.³

Sources:

1. Conversations with Daniel Angerstein and Allen Kinzey, Gainesville, Florida, summer of 1974.
2. David Fox, A Guide to North American Organbuilders (OHS 1997 revision). 178, 220.
3. E-mails with Daniel Angerstein, fall of 2015. 

For further information on Allen Kinzey, see:
Allen B. Kinzey
Nicholas-Bradford Organ Co

For further information on Dan Angerstein, see:
Dan Angerstein
Angerstein & Associates
Daniel Angerstein Organ Works

The address of the former Kinzey-Angerstein Organ Co was 299 East Street, Wrentham, MA