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Contains views of traffic lights throughout Philadelphia, highlighting lights obscured from the driver's sight. Shows policemen regulating the timing of lights. Portrays children picketing to get traffic lights and stop signs in their neighborhoods. Illustrates the installation of signal lig...
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| Language: | English |
| Published: |
1937-1946
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Closed Stacks
| Call Number: |
V7:3670/4579/4821-4823 |
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| Copy 1 | Available |