Zerah Colburn, a mental calculator, as a child. Stipple engraving by H. Meyer, 1813, after T.H. Hull.

    • Hull, Thomas H., -1800.
    Date:
    18 January 1813
    Reference:
    230i

    Licence: Public Domain Mark

    Credit: Zerah Colburn, a mental calculator, as a child. Stipple engraving by H. Meyer, 1813, after T.H. Hull. Wellcome Collection. Source: Wellcome Collection.

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