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Public Service of New Jersey, Bergen station. Low voltage switch gear I

Public Service of New Jersey, Bergen station. Low voltage switch gear ...

Public domain photograph of train station, free to use, no copyright restrictions image - Picryl description

Transformer manufacture. For many years this employee of a large Eastern electrical company has been winding low voltage coils for power transformers. He's become one of Uncle Sam's valued workers, because transformers are essential to almost every phase of the armament program. Westinghouse, Sharon, Pennsylvania

Transformer manufacture. For many years this employee of a large Easte...

Public domain photograph of Pennsylvania in 1930s, free to use, no copyright restrictions image - Picryl description

Detroit, Michigan. New method of making x-ray photographs size 4x5 inches instead of larger. Used at the Herman Kiefer Hospital for Communicable Diseases, to show various stages of tuberculosis. Apparatus for controlling the voltage and strength of the x-rays

Detroit, Michigan. New method of making x-ray photographs size 4x5 inc...

Public domain photograph of 1930s industry, war production in the United States free to use, no copyright restrictions image - Picryl description

Public Service of New Jersey, Bergen station. Low voltage switch gear II

Public Service of New Jersey, Bergen station. Low voltage switch gear ...

Public domain photograph of train station, free to use, no copyright restrictions image - Picryl description