Skull

Free to read here, from Project Gutenberg.

A Bilateral Division of the Parietal Bone in a Chimpanzee; with a Special Reference to the Oblique Sutures in the Parietal

Aleš Hrdlička

Cranial Osteology of the Hylid Frog, Smilisca baudini

Linda Trueb

The Surgery of the Skull and Brain

Louis Bathe Rawling