By A Mystery Man Writer
What to do with Old Film Reels
Film Heritage Foundation - A soundtrack on film is often
Before digital, how was sound put on/removed from a film? - Quora
When Sound Was Reel-9: Digital comes to the cinema
How to Tell if You Have Sound on Film Reels
Does my Film have Sound? – Kodak Digitizing
How to Tell If Your Super8 or 8mm Film Has Sound - DVD Your Memories
Sound Film
Reel to Real Cinema: Sound For The Future – The Stove Network
Audio Reel or Film Reel? How to Tell the Difference Between Them