This document provides examples and discussion of different types of illustrations used in books, manuscripts, and other media over time. It discusses early cave paintings from 20,000 years ago through modern digital illustrations. Various illustration techniques are described, including elaboration on story details, hinting at future events, using perspective, personification, and stylistic choices around line art, color, and composition. The document encourages thinking about how to apply these illustrative techniques and concludes by providing inspiration for a winter/holiday card project.