The Atomic History Museum in LV does not allow casual perusing of their stacks, unfortunately. They will refer you to online NTS archives, and the vast majority of those available (post-declassification) are about radiation effects on biology particularly as regards historical incidents of radiation hazards. Oh, and, no index so you never know if you are seeing the entire universe of documents available. An archivist’s bugbear, IMO.

When I was there a few years back there was a room there full of file cabinets you could indeed peruse.