Three balloons travel over a polar landscape: proposed method of reaching the North Pole by J.P. Cheyne. Coloured wood engraving by C. Roberts, 1877.

    Date:
    [1877]
    Reference:
    36393i

    Licence: Public Domain Mark

    Credit: Three balloons travel over a polar landscape: proposed method of reaching the North Pole by J.P. Cheyne. Coloured wood engraving by C. Roberts, 1877. Wellcome Collection. Source: Wellcome Collection.

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