W. Stanley Jevons, On the Mechanical Performance of Logical Inference, in Philosophical Transactions of the Royal Society, 1870, pp 497–518. This is an extract from the volume, containing the entire article, plus its three engraved plates showing the works and interior of the machine. This is very tastefully bound in paper covered boards with a paper spine label. This is the first description of the one the preeminent. SOLD
Jevons was a polymath and one of my favorite thinkers of the 19th century. He worked across many fields but seems to be remembered today mostly and unfortunately for his theory of the relationship between sunspots and economics cycles. He is not so well known as the inventor of one of the earliest pre-modern computers and particularly for it being the fastest machine of its kind ever invented.