So I read the 215 page FOIA. The first thing that jumps out is it's from the 70s when mothers like mine were terrified of measles. A lot of parents had been losing children to it recently (chart below). The FDA was under pressure in those days to do fast approvals (like the agencies are now for cancer), hence only 875 children tested. But they were led by different credible teams like in Children's Hospital Philadelphia. The 8 independent studies were consistent, not done by pharma, and those doctors had no reason to falsify data.
It's true the upper respiratory infection rate was high post vaccines but from what I can tell it was the normal rate independent of vaccinations for the time and places these tests took place. There were various other complaints like teething, but I don't think anyone thought the vaccines were causing common colds or teething problems.
It's actually a pretty confidence-inspiring read. We have a modern example of nothing-to-see-here (the Barr letter) but then you read the actual report and get a different picture. This seems to be the reverse. I wonder how many people actually read it.
I also wonder why it's a thing 50 years later that only 875 children were represented. We've since collected data on millions of vaccinations.