Charles Babbage was an English genius of legendary eccentricity. He invented the cowcatcher, the ophthalmoscope, and the "penny post." He was an expert lock picker, he wrote a ballet, he pursued a vendetta against London organ-grinders that made him the laughingstock of Europe. And all his life he was in desperate need of enormous sums of money to build his fabled reasoning machine, the Difference Engine, the first digital computer in history.
To publicize his Engine, Babbage sponsors a private astronomical expedition-a party of four men and one remarkable woman-who will set out from Washington City and travel by wagon train two thousand miles west, beyond the last known.
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