How did they add sound to movies before there was sound in movies? - Quora
Sound Film
Film Transfers
Identifying optical or magnetic sound (clip 2) - YouTube
Magnetic Tape and Film Examples — Endpoint Audio Labs
FilmFix - Rare Double 8mm Film with Sound
Unique Items in the Collection - Museum of Magnetic Sound Recording
Film Transfer – Super 8mm & Regular 8mm Film (Sound Footage) | Something Different
Capturing Sound on Your 8mm, Super 8, 16mm and 35mm Film | VCE
Kodak Pageant magnetic/optical 16mm sound projector with film thread running in experimental filmmaker Craig Baldwin's studio, San Francisco, CA, USA Stock Photo - Alamy
different film formats | Film, Film world, 8mm film
What is this stuff? It says film, but it says magnetic sound film. : r/AnalogCommunity
Optical sound - Wikipedia
FilmFix - Rare Double 8mm Film with Sound
Audio Video Workshop - Blog: How do you tell the difference between sound film and silent film?
Unique Items in the Collection - Museum of Magnetic Sound Recording
Capturing Sound on Your 8mm, Super 8, 16mm and 35mm Film | VCE
35mm Magnetic Audio Fullcoat (Audio Recording) — HollywoodFilmSupplies.com
Handling 16mm Magnetic Full Coat Rolls (clip 35) - YouTube
Magnetic Tape and Film Examples — Endpoint Audio Labs
35mm Mag Stripe - Mylar / Polyester (Audio Recording) — HollywoodFilmSupplies.com
Kodak Analog Magnetic Sound Film 810 (16mm, 1200' Roll) 8968182
