Any picture, or pair of pictures, prepared for exhibition in the stereoscope. Stereographs are now commonly made by means of photography.
A cardboard mount holding two photographs of the same subject, each from a slightly different point of view. When viewed with binocular vision, a stereoscopic effects of three-dimensional depth of fields is achieved.
a pair of pictures of the same object, taken at slightly different angles, presented side by side for viewing in a stereoscope. Landscapes were most commonly represented by stereographs rather than portraits. None of the images on "Baltimore City Nineteenth-Century Photos" is a stereograph.
a pair of photographic images of the same object, presented on a single sheet, each at a slightly different angle
a pair of photographic images taken with lenses at slightly different angles
A Victorian invention, this was two almost identical pictured printed side by side and, viewed through a stereoscope, produced a 3D image.