Here's a link to a video of real jazz dancing:
Whitey's Lindy Hoppers performing the Big Apple (1939)

"Whitey's Lindy Hoppers performing the Big Apple followed by some crazy Lindy Hoppin'. From the movie Keep Punching, 1939"...

And here's a link to Groovie Movie (1944). Funny jitterbug instructional video.

"Groovie Movie" by Metro Goldwyn Mayer, 1944. Funny jitterbug instructional video."

-snip-

The end of the movie features some actual jitterbug dancing.

[This video features the narrator's use of jive talk.]