New in the 1960s was the Viewmaster - a 3D slide viewer. One of

What We Can Learn from the First VR Device - Bob Cooney

View Master Viewer Vintage in Original box - Model E - EX! epsteam

Classic ViewMaster - Man From U.N.C.L.E - TV Show in the 1960s - 3Reels Packet - 21 3D Images : Toys & Games

3d Viewmaster

View-Master: America's Man in Space 3-Reel Set - Airplanes and Rockets

View-Master - Wikipedia

Let's take a look at some Fantasyland View-Master slides from 1960's D

View-Master made other products too (ad from 1966) : r/Portland

The View-Master was introduced at the - Historic Geneva NY

View-Master – PowerPop… An Eclectic Collection of Pop Culture