Thanks, Prof. P.! A fine pick - a great man and a notable peacemaker (Lord knows we need more of 'em). I had the honor of meeting and briefly speaking with him when he was the commencement speaker at my college in 1987.
Next let’s go with
B
Updated for the New Year: Botticelli - the letters we've used so far - #89 by Elendil_s_Heir