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

George Parker Bidder - (1806-1878) - Short biography and portrait.

George Parker Bidder: The Calculating Prodigy - Essay about his life and his ability and exhibitions of mental arithmetic. Written by Joyce Linfoot for the Institute of Mathematics and its Applications in 1987.