“How John Hersey’s Hiroshima revealed the horror of the bomb,” by Caroline Raphael, BBC Magazine, 22 August 2016,
The BBC news magazine reports on this anniversary and links to their 1948 radio broadcast recording of the original 31 August 1946 New Yorker Hersey article. which was the only article the New Yorker published in that edition.
Coincidentally, when I went hunting for my copy of Hiroshima, I found it next to my yellowed paperback copy of “The Bridge of San Luis Rey.”