FWIW:
In the 50s-60s-70s
Aviation Week often published complete (or nearly so) NTSB accident reports. Anyone with access to a library of this magazine will find a wealth of info on the conditions crews operated under, and by implication a historical timeline of how safety improvements have come about.
Bob Hotz was editor-in-chief then, and he called 'em as he see-d 'em. He made plenty of enemies I'm sure, but he did the industry a huge favor with his forthrightness.
