Hand-Crafted Deductions




For those who feel computers can sometimes be too fast, too accurate, C.T. Lewis & Sons provide the finest hand-crafted deductions.

Our theorems are deduced using only fair trade, organic, locally-brewed coffees, and we think you’ll see the difference.




Each deduction is made to order, and written by hand with pen and ink on the finest paper and packaged in a vintage Mason Jar. See for yourself.

$59 each (+shipping)

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If you have any questions, please contact us any time at ctlewisandsons@gmail.com

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