Show PRODIGY IS DEAD nw now jersey ma man n known as the aig lightning ht calculator a william vallance valiance the famous lightning calculator who could do any sum in mathematical calculation mentally and with but an instants hesitation is dead at trenton N J aged 30 years vallance could duplicate the feat eats s of any of 0 the lightning calculators and beat them all by stating instantly any desired date in history he could not tell how he know knew history but would rattle off fact after fact without ever making a mistake ile he could give instant answer to such arithmetical questions ong as multiply by feats in algebra were his delight |