RCA was formed in 1919 and had no manufacturing facilities
during the 1920's. All products bearing the "Radio Corporation
of America" label were built by several other companies. Among
those companies: Westinghouse, General Electric & Wireless
Specialty. Westinghouse joined the group in mid 1921 and
produced what is now the some of the most recognized models of
early RCA receivers. Among these early models was the "Aeriola"