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USA: Radio Catalog for the radio manufacturer Electrical Research Laboratories Inc. (Erla); Chicago, Illinois

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Model	Year	Category	Tubes	Pictures			Forum	Coll.Pr.
336	1931	Radio	4 - 36			1S
5700	1933 ?	Radio	5 - 2A7			2S
5721	1934	Radio	5 - 2A7			2S
6100	1933 ?	Radio	6 - 78			2S
6200	1934 ?	Radio	5 - 1A6			2S
6300	1933 ?	Radio	6 - 2A7			3S
6315	1934	Radio	6 - 2A7			3S
6317	1934	Radio	6 - 2A7			3S
6323	1934	Radio	6 - 2A7	4		3S
6446	1934 ?	Radio	6 - 6D6	7		1S
7700	1933 ?	Radio	6 - 1C6			3S
7732	1934	Radio	6 - 1C6			3S
7741	1933 ?	Radio	6 - 1C6			3S
9100	1935 ?	Radio	9 - 34			3S
Short Wave Converter [Console?]	1931 ?	Converter	3
SW-Converter 254	1932 ?	Converter	3 - 24	5		1S
Circloid Kit	1925	Kit	5	7				$
Cirkit Superflex	1925	Kit	5
Duo-Reflex Four Tube Kit	1924	Kit	4	7				$
Duo Reflex OneTube Kit	1924	Kit	1	2		1S		$
Duo Reflex ThreeTube Kit	1924	Kit	3	8		5S		$
Duo Reflex TwoTube Kit	1924	Kit	2	11		2S		$
Superflex Cirkit K7	1925	Kit	5
603	1933 ?	Car Radio	6 - 78			2S
Electric Pickup	1928	Microphone/PU		2
Audio Frequency Transformer	1923	Radio part		3				$
Balloon Circloid RF-Transformer	1925	Radio part		7
Fixed Crystal Detector	1923	Radio part		2				$
R.F. Transformer AB1, AB2, AB3	1922	Radio part		1				$
Rheostat	1925	Radio part		1
Selectoformer Type A	1924	Radio part		1				$
Synchronizing RF Transformer Duo-Reflex 1	1923	Radio part		1		1S		$
Walnut Cabinet for Duo Dynamic Speaker	1928	Cabinet		2

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