calvin jr.n the coolidge presidency? >> like a lincoln story. it's amazing tragedy. calvin jr. was about 16 and he got a blister on the tennis court of the white house and the blister went septic and he died within about a week. if you can imagine from a blister to death just before antibiotics came in. so what a story and there was nothing they could do about it. coolidge had lost his sister. he had lost his mother and now he was losing calvin who was the luck child of the family. you can hear from a happy guy, a very clever, extremely loyal and he didn't know what to do. i think other historians have told the story of the death of calvin as the end of the coolidge presidency. it was in 1924, he was elected that year on his own four more years. they say well he was depressed for the next four years. i don't see that. it's not a story of yes but. the death of calvin yes but. he persevered withstanding a blow. no one could understand the life of their family and you see a lot of sorrow and anger