1) Three-D picture 
• (n.) Any picture, or pair of pictures, prepared for exhibition in the stereoscope. Stereographs are now commonly made by means of photography.
(from the article `photography, history of`) Stereoscopic photographic views (stereographs) were immensely popular in the United States and Europe from about the mid-1850s through the early ...
Ste're·o·graph noun [ Stereo- + -graph .] Any picture, or pair of pictures, prepared for exhibition in the stereoscope. Stereographs are now commonly made by means of photography. 
Type: Term Pronunciation: ster′ē-ō-graf Definitions: 1. A stereoscopic x-ray apparatus.
a single or double picture for a stereoscope.