Jacob Estey series - Electric Organs

Between 1954 and 1958, the Estey Model S and Model AS-1 electronic organs were developed in Brattleboro, Vermont USA.
In 1960, the Estey organ factory in Brattleboro, Vermont, closed.
Production of the free-reed organ and the pipe organ was discontinued, but the electronic department continued and was relocated to California under the name Estey Electronics, where the trail goes cold.

In arround 1966, electronic Estey chord organs manufactured by the Miner company reappeared in Pennsylvania.
Two of the later electronic Estey organs that I found on the internet were the Model P2010 and the Model 1025.