there was a chapter i wouldn't enjoy writing, but i think the chapter that is about cassatt i would enjoyhere you have contrasting personalities, geniuses painting in paris at exactly the same time, living in an entirely different world within the world of paris. paris, like all great cities, has many worlds within the world of paris, and mary and john singer lived worlds apart, but yet almost neighbors in the same city, and they both were painting what would prove to be american masterpieceses that was more than standing the test of time. it would become more important with time. c-span: one of the people you talk about is benjamin rush's son, richard rush. where did he come from? >> guest: son. son of the famous doctor, and he had a distinguished career as a diplomat, and he was assigned to be our minister to paris this o period earlier, and rush is interesting because he decided to recognize the new republic of france after the overthrow of louis. when communication between america and france was still a month at best, it -- it would come by ship, mr. morris had not invented the telegr