The Hiroshima shadows.

[Gawdzilla Sama]

Yep. And the Op-20-G and S.I.S. work at the beginning and end are well worth reading. I've put a bit of it online. The original thing that got me going, back in 1965, was the Hearings. I read all forty volumes before I joined the Navy.

Awesome, thanks for the links!

Start the Hearings with Part 40, it's the summary report. Bread crumbs to interesting parts from there.