sentences:  Knowles provided the subcommittee with the names of his Communist Party cell-mates during the years at the Long Island newspaper.He told them he knew of no Communists at the "New York Times".His testimony prompted Senator Thomas Carey Hennings to admonish the subcommittee counsel J. G. Sourwine for not giving the subcommittee advance notice of the witnesses and questioned whether "any useful purpose" had been served by publicly embarrassing such a long-rehabilitated communist such as Knowles.