Peanuts Begins by Charles Schulz for April 28, 2018

name a 1950s three-dimensional motion picture that requires those specs

Well, I suppose asking the colorist to make the lenses red and green would have been a bit much…

The new Avengers movie is also in 3D.

The original 3D movies were popular in the mid 1950s. He’s not talking about the modern version.

Damn, I remember this strip and thinking that 3D was history. Had as much of a chance to come back as corset stays and beaver pelt hats. Oop.

Now Snoopy is gonna join a gang and pick on a young dog and his son from 30 years in the future!

There are 3D pictures that do not need glasses to look at. (I have one.)

I was expecting someone to make a Joe Cool joke.

His glasses look like the ones today with a dark polarized lens.