These are images of a ventral view (from below) of the whole horse displaying the superficial muscles; a left lateral view of the neck and shoulder region displaying the skeleton and associated nuchal ligament and supraspinous ligament; and two views of the eye and adnexa (associated structures).
Ellenberger, Wilhelm, Hermann Baum, and Hermann Dittrich. 1898. Handbuch der Anatomie der Tiere für Künstler. Leipzig: Dieterichsche Verlagsbuchhandlung.