Not a specific thing, no. It tends to be trade knowledge or bits of history & beliefs that were printed, or orally known. I have a certain store of oral history regarding a few 20thC movements that was passed down, for instance. But there are no electronic editions of that information - if you find it on Wikipedia, it'll be filtered, somewhat mangled, and altogether minimal in description.

These days when I want to find obscure knowledge, I purchase books written on the topic by scholars; they concentrate the information very well with good sourcing.