Date: | 02 25 1960 |
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Description: | Harold Keller holds a Fotoscope which indicates when engine oil needs changing. |
Date: | 11 21 1958 |
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Description: | A police officer instructs two cadets on the operation of radar equipment and the proper way to talk to violators. The officer is holding a tuning fork nea... |
Date: | 1940 |
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Description: | Two men are standing near a car, with the man on the right wearing a police uniform. A wired device is sitting on the hood of the car and both men are look... |
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