What is this stuff? It says film, but it says magnetic sound film. : r/AnalogCommunity
Sound Film
Unique Items in the Collection - Museum of Magnetic Sound Recording
Super 8 Color FILM The Rescuers Walt Disney Magnetic Sound The Rescue | eBay
Film Transfers
Capturing Sound on Your 8mm, Super 8, 16mm and 35mm Film | VCE
Film Transfer – Super 8mm & Regular 8mm Film (Sound Footage) | Something Different
Magnetic Film Recording System - Model 390 / 990 | Inovonics Broadcast, Inc.
Audio Video Workshop - Blog: How do you tell the difference between sound film and silent film?
How did they add sound to movies before there was sound in movies? - Quora
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