5 Free Photos of American Civil War Technology

historyhistoricalhot air balloons of the united states
Camp scene. Showing winter huts and corduroy roads - NARA - 524642
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Waud - infernal machines
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Signal Tower at Ft. Wisconsin, Va., left of lines - NARA - 524719
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Prof. Lowe's balloon gas generator - NARA - 528871
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Prof. Lowe's balloon gas generator - NARA - 528871
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