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Our galleries are quietest on weekdays and weekend mornings. At busy times, particularly on Saturdays, you may need to queue for our temporary exhibitions.

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Report of experiments on gunpowder, made at Washington arsenal, in 1843 and 1844 / by Alfred Mordecai.

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Active filters:

Report of experiments on gunpowder, made at Washington arsenal, in 1843 and 1844 / by Alfred Mordecai.