 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 " or " Network Is Long Gone " . A few popular DuMont programs , such as Cavalcade of Stars and Emmy Award winner Life Is Worth Living , appear in television <unk> or are mentioned briefly in books about U.S. television history . 
