The 1953 movie War of the Worlds features a square dance! If you search the script, which is available online, you can see several references to square dancing.

(1)
PASTOR COLLINS:
There’s a square dance at the social hall this evening.

(2)
FIDDLER:
A hickory limp and an ole burned stump –
Go meet your honey and everybody jump!
Now promenade two and promenade four –
Promenade that pretty gal all around the floor.
Now face your lady and make a bow,
She’s a pretty one you’ll allow!
Point the heel and point the toe –
Now you’re makin’ a do-si-do.
Mom – there’s a chicken in the bread-bin
A-peckin’ at the dough!
One more change and on we go.

(3)
CLAYTON:
Yes. And you know what I was thinking? If we could gather all the energy expended in just one square dance, we could send that meteor back to where it came from.

(4)
SYLVIA:
You never know where you’re going to wind up when you go to a square dance!

(5)
SYLVIA:
I never noticed before – that’s a cowboy tie….

CLAYTON:
I bought it for the square dance. I thought I ought to wear something Western.