Reprinted from "INSULATORS - Crown Jewels of the Wire", December 1969, page 42
The Whitall Tatum Glass Company located here in Millville, New Jersey which
was sold to the Armstrong Cork Co. back in 1938 has been sold
by them to Kerr.
To the best of my knowledge this is the only glass plant still making
glass insulators in the U.S.A. The runs are limited in quantity and
variety so not many new Kerr insulators may be expected. Unlike
the Whitall Tatum name which remained for many years after the
Armstrong people took over the Armstrong name can be used for
only I year on the molds. At present the only change has been on the T W which is identical to the
Armstrong T W except that the front of the base now reads KERR
TW. All insulators are in flint glass (clear).
It is my understanding that most of the new production is for export.