Tri-Ergon
Videos
The Tri-Ergon sound-on-film system was developed from around 1919 by three German inventors, Josef Engl, Joseph Massolle, and Hans Vogt.
Tri-Ergon memorial plaque for Vogt Massolle Engl pioneers of optical sound technology Berlin
Plaque at the site of the former Alhambra theatre on Kurfürstendamm, Charlottenburg, Berlin, commemorating the first public showing of sound films in 1922 by Engl, Massolle, and Vogt (in German).
William Fox in 1921
Hanns Eisler in uniform in 1917
Freeman Harrison Owens
Videos
Freeman Harrison Owens was an early American filmmaker and aerial photographer.
Freeman Harrison Owens in 1919