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George H. Clark Radioana Collection
[Frank Conrad's garage, black & white photoprint.]
[Man and woman seated at a table and listening to radio on headsets, black-and-white photoprint.]
[Lee De Forest broadcasting over station W2XCD, Passaic, New Jersey : photoprint.]
[Guglielmo Marconi wearing headphones : photograph]
[Radio Central, Rocky Point, Long Island multiple tuned antenna system, black & white photoprint.]