The Prolegomenon in volume 2 has an incredibly terse bullet point history of major events. Probably not as detailed as you would like, it’s maybe half a page.
T-A-G is stingy with space due to Dead Tree Edition costs being per page based.
There is also lot of rehashing of the last chapter or two early on in volume 2, but it doesn’t cover a lot of what happened before the final few chapters.
I am in discussions with Antefalken (demon bard) to write a Broadway musical of the books, but that may take a while since neither he nor I know how this stuff is going to end.