>My particular itch is for Bavarian history and non-Roman European history.
There's a ton of public domain history books you get off of the interbuttz for free. Check Project Gutenberg, Archive.org, and Wikisource for stuff you're interested in.
Here, just by typing "Bavaria" into Gutenberg I came up with a biography on King Ludwig II of Bavaria:https://www.gutenberg.org/ebooks/48578
Why is that gook begging to get throatfucked?