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Benjamin Banneker: the man who saved Washington
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A biography of the self-taught black mathematician and astronomer who as a surveyor helped determine the boundaries of the District of Columbia.
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A biography of the self-taught black mathematician and astronomer who as a surveyor helped determine the boundaries of the District of Columbia.
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"A biography of the self-taught black mathematician and astronomer who as a surveyor helped determine the boundaries of the District of Columbia."
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