For your entertainment and education why not spend 20 minutes watching this excellent video on YouTube about the history of View-Master. Not only does it plot the invention of the 3D image viewing system through to worldwide success but it also takes time to explain how humans see in 3D and how this was understood and adopted to build the Victorian craze in 3D images.
The author, Dave Machin of the View Master Travels channel, has a huge collection of original View-Master reels and particularly enjoys the travelogue series taking viewers around the world – the old reels now making a valuable snapshot in time.
Enjoy the super video by Dave Machin in collaboration with Peter Dibble.