Bidder, George Parker People History Civil Engineering

Brief account of his career, based on the biography "The Calculating Boy" by his great-great-grandson, E.F. Clark.

• George Parker Bidder: The Calculating Prodigy - Essay about his life and his ability and history exhibitions of history mental arithmetic. Written by Joyce Linfoot history for the Institute of history Mathematics and its Applications history in 1987.
• George Parker Bidder - Brief account of his career, based on the people biography "The Calculating Boy" by his great-great-grandson, people E.F. Clark.

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