A collection of 17 letters with correspondence between Jules Richard's company and a retailer. They provide an interesting insight into the trade of stereoscopy devices at the beginning of the 20th century.
A Métascope multi-view table stereoscope for viewing 45x107mm glass stereoviews by Unis France, one of the trademarks of Mattey from Paris.
Jean Agélou was a French photographer who is known for his erotic photographs. His French postcards were very popular in the early 20th century, but he also created stereo photos.
Since my acquisition of a Stéréo-Panoramique and a catalog from 1913, I have a special interest in the cameras and stereoscopes of Lucien Leroy. I really wanted a Stéréocycle and this week I found a nice model, complete with bag and 24 plate holders.
Today, Zeiss lenses are known for their high optical quality. The company has a long history and at the beginning of the 20th century it also produced stereoscopes. I recently added a rare Carl Zeiss Jena stereoscope to my collection
Ernemann was a renowned German manufacturer of photographic and film cameras from Dresden. During the company's lifecycle it produced a wide range of high-end cameras and accessories.
Two Zeiss Ikon hand-held stereoscopes for the 45x107 and 6x13 formats. The magnifying lenses of these stereo viewers offer a wonderful viewing experience. These are the workhorses I use to view my stereoview collection.