 It ended network operations on August 6, 1956.DuMont's latter-day obscurity, caused mainly by the destruction of its extensive program archive by the 1970s, has prompted TV historian David Weinstein to refer to it as the "forgotten network".A few popular DuMont programs, such as "Cavalcade of Stars" and Emmy Award winner "Life Is Worth Living", appear in television retrospectives or are mentioned briefly in books about U.S. television history.