Does anyone know of resources that show the old tube radios of the 40's and 50's. I have the radio that I took out a 1952 Chevy 1/2 that I recently bought. Someone identified it as a 1946-48 Pontiac radio. The knobs are actually 3/4" closer together and sit about an inch higher than the AD models. There is no back cover or no information with model number. I would like to confirm what I have. CCottrel says it looks similar to the 42 Pontiac radio.