Tomes of Folklore?

[Brightamethyst]

Further muddling things, I see you need C tokens AND I happen to have a B token in my inventory... huh?

Then I read I only need one folklore tome per speciality. So why are there 3

The A, B, and C tokens are for Stormblood, Shadowbringers, and Endwalker tomes respectively.

It varies by expansion but Endwalker has three tomes per class, so nine total. (SB had six while ShB only had three.)