Arthur Griffith Update

Having found myself guilty of promulgating misinformation, I have put an addendum on my post, "Pooze the Prodigy" of August 24. I have discovered two books, On the Psychology of Learning a Life Occupation, by Bryan, Lindley, and Harter, and The Great Mental Calculators: The Psychology, Methods, and Lives of Calculating Prodigies Past and Present, by Steven B. Smith. Both books have filled in some of the gaps in my knowledge of Arthur Griffith, and human calculators in general.