The stereoscope and stereoscopic photography
A technical manual on the stereoscope and stereoscopic photography by Félix Drouin, published in English by Percy Lund at Bradford and London in 1890 for photographers and optical amateurs. The plates are line diagrams in black on cream: dashed sight-lines converging from paired eyes, hatched prisms and lenses, and small blocked-in cameras, useful as ready-made optical ray schematics.
