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Common type USA tube/semicond. Air Scout - tubes Airline, Super-Airline, Wards (tubes) - see also Montgomery Ward; Chicago, IL Apollo Radio Tube Company; New York City, NY, Irvington, NJ CeCo (tubes), C.E. Mfg. Co. Inc.; Providence, RI Cornell Electric Manufacturing Corp.; New York Crusader, Sunlight Lamp Co. / Electric Co.; Newton Falls, OH - Irvington, NJ Diatron (tubes), Diamond Vacuum Products Co; Chicago, IL Dynamic Radio Tube Works; Newark, NJ Everbest Radio Corp.; New York, NY Globe Electric Company; Pittsburgh, PA Golden Comet, Gebhart Stores; Dekatur, IL Hygrade Lamp Co. (Neptron); Salem, Massachusetts Imperial Radio Corporation; Chicago, IL Kelly Tube Co.; New York, NY La Salle Light Company; Chicago, IL Lafayette Radio & TV Corp; New York (NY) Legion (Tube brand); (Where ?) Long Distance Wireless Instrument Company; Boston, MA Macy's, R.H. Macy & Co.; New York, NY McCullough, Frederick, S. Co.; Wilkinsburg, later Sales Company; Pittsburg Paramount Radio Tube Co.; Brooklyn, NY Philmore Mfg. Co. - Ajax Products Co.; New York, NY Ravac Co.; Nashua, NH Real Tone Tube Co.; Pawtucket, RI Royal Tube Co.; Pawtucket, RI Shelby Radio Tube Co.; Shelby, OH Silvertone (tubes) - see also Sears; Chicago, IL Songbird (brand) Speed, Cable Radio Tube Corp. / Cable Supply Co.; New York and Brooklyn, NY Thorola, Winkler-Reichmann Co.; Chicago, IL Van Dyke Laboratories; Newark, NJ Van Horne Tube Company; Franklin, OH (see also Musselman)