That "no debate, no meeting, nothing" part bugs me the most. I read about a similar case in Washington state where a district pulled old papers and the state library board got involved, mostly because the archive was already public record by then. Might be worth calling your state library association, not just the district, since they can push on records rules. Also check if the Wayback copy covers the whole archive, because sometimes folks have quietly mirrored this stuff on archive.org and you can at least point the district to it.

The "same dose on the label" part is the trap, because the pill can say 50 mcg and still not act the same in your body. My pharmacist explained it to me once: the FDA lets generics be a little different from the brand in how much actually gets into your blood, like 5 percent either way or so, and for most drugs nobody notices. Thyroid stuff is on the narrow end though, so even a small shift can show up as the 2pm crash and messed up labs. What helped me was asking the pharmacist to check which maker supplies their store brand and whether it changed, since they switch suppliers a lot. Then ask your doctor to write "no substitution" on the script so insurance has to cover the brand, or at least so you stay on one maker. I'd also call around to other Tucson pharmacies and ask what maker they stock before you move your script, because the store brand is not always the same pill from one store to the next.