This is him:
http://www.orangecoastcollege.edu/about_occ/news/Orange+Slices.htm?Id=10341
" The scientists decided that the bomb should not be dropped.
'We suggested that the weapon be used to intimidate the Japanese into surrendering. We could give them a demonstration of its awesome power. Their own physicists – many of whom had been educated at Berkeley – would tell the Japanese leadership that you can’t resist this sort of thing. There isn’t a facile answer for survival.'
A total of 617 scientists signed a letter addressed to President Truman. The letter encouraged him to first demonstrate the power of the new bomb, before dropping it. The request was denied."
That's how much of an asshole Truman was. He was smarter than 617 scientists.
I had no idea Henry died. He was a good man. I talked to him quite a bit. He was one of the smartest and kindest of people I knew.