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How an Elevator Goes Up and Down. There are two kinds of elevators today. the hydraulic, which is
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How an Elevator Goes Up and Down. There are two ki...

Jack McGee 1912
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Jack McGee 1912

Tipple & Elevator into shaft. Leads down to mine 200 ft. below. 1908
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Tipple & Elevator into shaft. Leads down to mine 2...

Construction of the panama canal
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Construction of the panama canal

Milk Break For War Workers
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Milk Break For War Workers

Lindbergh Beacon Caretaker
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Lindbergh Beacon Caretaker