[Eliot Ness]

Good sleuthing Carl 

Unfortunately Electronic Devices Company was most likely just a wholesaler buying radios from one or more radio manufacturers.  Their address, 601 w. 26th St., New York, NY, was built in 1931 as a full-block freight terminal, warehouse and office building.

   
   

You can find this ad in the June 1946 issue of Radio and Television Retailing on page 37:

https://worldradiohistory.com/Radio_Reta...gazine.htm