The Major corporation was begun by Roscoe Major in the early 1900's.
The earliest address I found for them was 4603 West Fullerton Avenue
in Chicago, but they moved to newer and better facilities out in
Crystal Lake Illinois in the mid 60's. When I was involved in their
equipment, Father Major's sons Frank and Ross ran the operation.
Interestingly, the bread and butter of their business was
manufacturing reflectors for traffic signal lights, which was a
natural extension of their capability to spin and hydroform aluminum
reflectors and apply the highly reflective ALZAK coating found in
theatrical instruments.
...
The Major Corporation dissolved in the late 1970's but some of the
engineers picked up some of the pieces to form Major Control Devices,
hoping to develop the expanding market for electronic dimmers. The
management team the operated Electro Controls sold the theatrical
manufacturing operation to Major Control Devices in the early 1980's
and the entire mixture was subsequently purchased by Strand a few
years later.
