Okay... after searching the internet, I found some more supporting info.
DELCO APPLIANCE DIVISION
The North East Electric Company which was formed in Rochester, New York in 1908, became a part of General Motors in the latter part of 1929. Within a few months it was consolidated with the Delco Light Company and it's name changed first to Delco Appliance Corporation then later to Delco Appliance Division. Delco Appliance was the main supplier for items such as heater motors and windshield washer motors and pumps.
ROCHESTER PRODUCTS DIVISION
In 1937 it was decided to build a second plant for the Delco Appliance Division in Rochester, New York, and the new factory was opened in 1938. A few years later, shortly before World War II, the plant was 100 per cent converted to the manufacture of war products. At the conclusion of the war, the plant did not reconvert back to it's original peacetime activities. Instead, it was called upon to begin the development of fuel devices such as carburetors, and steel tubing for fuel, oil, and brake lines.
Story of General motors
books.google.com
General Motors Corporation. Dept. of Public Relations, General Motors Corporation - 1960 - 84 pages - Snippet view
In 1937, it was decided to build a second plant for the Delco Appliance Division in Rochester, New York. This new factory was opened in 1938. The following year, it was accorded divisional status as the Rochester Products Division...
Nut shell.
Dayton Fan & Motor Company..26 and retro
Day-Fan 26-29/30?
Delco 30-the start of WW11. The last link I saw to support Delco fan motors was in 39. Not sure after that.
