Slow reading points me to the Not in WorldCat blog, showcasing weird funky and obscure books that you can’t find in one of the many libraries Worldcat covers.
Worldcat.org is the public face of the largest combined (or “union”) library catalog in the world. Library folks usually refer to it as OCLC (Online Computer Library Center). Currently OCLC/WorldCat catalogs over 1 billion items from over 60,000 libraries around the world. This blog is not affiliated with OCLC/Worldcat in any way. It’s just an outlet for one bookseller/librarian (me) to feature unusual, rare and interesting items that exist outside of WorldCat’s vast reach.