TURCK, Joseph Abram.

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Origin of Modern Calculating Machines. First edition of the first popular history of modern calculation, by an engineer then at the cutting edge of the field. By the early 20th century, manufacturers of mechanical calculators were focussing on adapting them for keyboard operation. Joseph Abram Turck (1870-1956) patented his Mechanical Accountant, a multi-column key-driven machine, in 1903. In 1911 he joined Felt & Tarant, manufacturers of the world's first practical and commercially successful adding machines.This copy is from Felt & Tarant's company library, with their purple ink stamp on the recto of the first plate.

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