Hamilton Radio Corp.
142-144 W. 26th Street, New York, NY (1941)
510 6th Avenue, New York, NY (1943)

NAMCO Manufacturing Co., Inc. (N.M. Co.) (1935-1940) failed in late 1940 and was reorganized as the Hamilton Radio Corp. in January, 1941.  Models sold include brand names Olympic and Tru-Base.

In 1946, the company name was changed to Olympic Radio and Television.

Olympic models are listed there.

Under the new management of Adolphe A. Juviler, President, Hamilton Radio Corp. expanded the production line to include table radios, portable radios, radio-phonographs, and console combinations from 1941 to 1942.

After the United States entered the war in 1942, the production of consumer radios was prohibited and the company, like many others, converted their production to assist with the war effort.

After the war, normal consumer production resumed and models included Olympic and Tru-Base.

Hamilton Radio Corp., announced in 1946 that the company name has been changed to Olympic Radio & Television, Inc.

Note that there was a year or two (1945-1946) that the Olympic and Tru-Base models were sold with the Hamilton Radio Corp. name instead of the Olympic Radio & Television name.

In The Talking Machine World, May 1925, it's announced that a Hamilton Radio Co., New York, has been incoporated at Dover, Del., to make accessories, with a capital stock of $500,000.

In the same issue, there is another entry detailing that the Hamilton Radio Corp., New York, was recently incorporated at Albany with a stock of $8,000, by J. Burfeindt, C.M. Kukelhorn and C.E. Jones.

We also have an entry for the Hamilton Radio, Inc., also in New York.

Source:
The Commercial and Financial Chronical, Vol. 162, No. 4423, Sept. 24, 1945; via FRED/FRASER Economic Data, St. Louis Federal Reserve