A Manual of Photography: intended as a text book for beginners and a book of reference for advanced photographers
Matthew Carey Lea's 1868 manual of photography, written in Philadelphia as a text for beginners and a reference for working photographers. The figures are plain line diagrams of optics — ray paths through lenses, mirror reflection angles, focal points and labelled construction lines in light letterpress strokes — useful as geometric schematics, arrow-and-axis motifs, or spare technical ornament.
