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WS ZO T/L View of city between day and night / Pittsburgh, PA, United States
WS ZO T/L View of city between day and night / Pittsburgh, PA, United States
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Time lapse, overhead traffic crosses Ben Franklin Bridge during rain storm.
Time lapse, overhead traffic crosses Ben Franklin Bridge during rain storm.
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WS PAN T/L View of city between day and night / Pittsburgh, PA, United States
WS PAN T/L View of city between day and night / Pittsburgh, PA, United States
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WS T/L View of city skyline between day and night / Pittsburgh, PA, United States
WS T/L View of city skyline between day and night / Pittsburgh, PA, United States
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Night time time lapse Philadelphia cityscape with the traffic crossing the Ben Franklin Bridge in the foreground.
Night time time lapse Philadelphia cityscape with the traffic crossing the Ben Franklin Bridge in the foreground.
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B/W 1933 high angle line of people waiting to get into liquor store / Pennsylvania / repeal of Prohibition
B/W 1933 high angle line of people waiting to get into liquor store / Pennsylvania / repeal of Prohibition
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B/W 1933 policeman allowing line of men to enter liquor store / repeal of Prohibition / Pennsylvania
B/W 1933 policeman allowing line of men to enter liquor store / repeal of Prohibition / Pennsylvania
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The ENIAC calculating machine computer
/ patch wires and switches on ENIAC computer / PAN to array of numerical bulbs lighting up / man pointing to blinking bulbs / back of computer showing wiring components. The ENIAC calculating machine computer on January 01, 1946 in...
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Albert Einstein & Robert Millikan view finished telescope
/ worker completes huge telescope mount as crowd watches / scientists Albert Einstein and Robert Millikan watch / Einstein inspects scale model of telescope. Albert Einstein & Robert Millikan view finished telescope on May 04, 1937 in...
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Stock car race official waves checkered flag
Stock car race official waves checkered flag
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A cyclist changes gears on his bike as he rides along a path in Pennsylvania.
A cyclist changes gears on his bike as he rides along a path in Pennsylvania.
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US Civil War Cannon Pan from Gettysburg National Military Park
US Civil War Cannon Pan from Gettysburg National Military Park
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A roller deposits pretzel dough into a vat.
A roller deposits pretzel dough into a vat.
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Stock car race official waves checkered flag
Stock car race official waves checkered flag
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Stock car pit-crewman removes race-car lug-nuts
Stock car pit-crewman removes race-car lug-nuts
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Race-car driver holds up trophy, blue racing team celebrates stock car victory
Race-car driver holds up trophy, blue racing team celebrates stock car victory
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Pit-crewman tightens new race-car tire lug-nuts
Pit-crewman tightens new race-car tire lug-nuts
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Pit-crew removes lug-nuts and jacks race-car
Pit-crew removes lug-nuts and jacks race-car
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Pit-crew removes lug-nuts and jacks race-car, man runs with tire
Pit-crew removes lug-nuts and jacks race-car, man runs with tire