Babbage Difference Engine Neck Tie
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Drawing of part of Babbage's difference engine Harper's New Monthly Magazine Volume 0030 Issue 175 (December, 1864) illustrating the article "Recreations of a Philosopher".
Drawing of part of Babbage's difference engine Harper's New Monthly Magazine Volume 0030 Issue 175 (December, 1864) illustrating the article "Recreations of a Philosopher".