This document provides an overview for teaching a lesson on 19th century photography. It discusses key early photographers like Daguerre, Niepce and Talbot and the development of photographic processes from daguerreotypes to calotypes. It also covers how photography was used in various contexts like portraiture, documentation of history and travel, and how it influenced art movements like realism. The document provides suggestions for course content, readings, videos and images to examine different applications and impacts of early photography.