19th Century Stereo Viewers: A Fascinating Look Back in Time Presentation by Ray Holstein of the National Stereoscopic Association. Share this:FacebookPinterestEmailPrint Related Published by John McCormick Teacher at Riverton School 1974-2019, author, amateur historian, Historical Society of Riverton Board Member 2007-2023, newsletter editor 2007-2023, website editor 2011-2023 View all posts by John McCormick