Hmmm. I got to Circassian as just a people, so moved on...
Here's a much longer Araucaria then.
Slip is one that's left off the front page, one held by librarian (11,3,3)
As it's a themed answer it's MISSISSIPPI MUD PIE, but apart from MISS for slip and maybe left off giving the L coming out of SLIP and front page giving PI, the one held by librarian goes over my head.