The invention:
The first practical system for linking sound with
moving pictures.
The people behind the invention:
Harry Warner (1881-1958), the brother who used sound to
fashion a major filmmaking company
Albert Warner (1884-1967), the brother who persuaded theater
owners to show Warner films
Samuel Warner (1887-1927), the brother who adapted soundrecording
technology to filmmaking
Jack Warner (1892-1978), the brother who supervised the
making of Warner films