Unidentified photographer / artist
1901 (patent)
Holmes-Bates style Stereoscope; "the Stereo-Gothard", patented by R. Y. Young, 1901

Stereoscope
Stereographica - Antique Photographica
Courtesy of Bryan and Page Ginns (#14 / 32)
 
Sold only by the American Stereoscopic Company. The viewer was clearly designed specifically for tissue views although it is entirely suitable for all paper and glass views in the standard size.
 
LL/11123