Amperite 1938 385

Amperite 1938 387

Bezzi 1938 514

Biennophone 1938 113

Brush 1938 389

Fairchild 1938 381

Graetz 1938 0

HMV 1938 511

Imcarradio 1938 513

Lansing 1938 397

Lesa 1938 515

Nora 1938 45

Opta 1938 0

Oxford 1938 393

Philips 1938 32

RCA 1938 0

RCA 1938 1

RCA 1938 2

RCA 1938 252

RCA 1938 27

RCA 1938 273

Radiomarelli 1938 512

Radiotone 1938 379

Radiotone 1938 399

Sound 1938 391

Westinghouse 1938 1

jensen 1938 377