Now playing: The Night The World Exploded (1957), duration 53:14, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: Marion Harris- Songbird of Jazz (1928), duration 7:38, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

This RetroStrange TV GIF is from How the Ear Functions (1940). Browse the full, watermark-free, RetroStrange GIF Gallery at https://retrostrange.com/gifs/ #RSTV

Now playing: Reefer Madness (1938), duration 1:08:17, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: Taking the "X" out of X-Rays (1940), duration 9:14, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: The Correctional Officer: If You're Taken Hostage ..., duration 16:26, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: Ray Harryhausen's Hansel and Gretel (1951), duration 10:16, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: Song Impressions (1928), duration 9:36, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: The Lady from Shanghai (1947), duration 1:27:34, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: It Ain't City Music (1973), duration 14:02, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: Stop the Projector, I Want to Get Off! (1940), duration 11:31, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: Invisible Ghost (1941), duration 1:02:50, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: Safety Gear: Eye and Face Protection (1989), duration 11:13, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: How the Eye Functions (1941), duration 11:25, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: Sound Recording and Reproduction (Sound on Film) (..., duration 10:38, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: Way Stations in Space (1961), duration 12:27, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: The RCA 16mm Sound Projector (1958), duration 5:55, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: America's Safest Tire (1940), duration 10:59, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: Let's Face It (1952), duration 13:29, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV

Now playing: Birds of Prey (1938), duration 10:29, on RetroStrange TV1. Watch live: https://live.retrostrange.com #RSTV