doi:10.7916/D84J0SGKLetter with Attached Document from Felix Frankfurter to Labor Secretary Frances Perkinscorrespondencemanuscriptstextt.l.s.to Frances Perkins; Frankfurter, Felix Letter includes "The Government's Right to Condition the Purchase of Its Supplies and the Rendering of SErvices to It Upon the Observance of Decent Labor Standards", written by Felix Frankfurter