does the stuff from the Jazz Institute in Darmstadt count? (link)
Not familiar with much of their stuff, but you need to go through some effort to find these out and they're in German too, which helps obscurity. I only have the catalogue to the 1988 exposition, reprinted with additions in 1997. Now, that is one hefty jazz tome! 700+ pages (A4 sized) with loads of information on jazz, particularly also in Europe.