Show Grand Jury Has Evidence Of Letters n By Dr SAN AN FRANCISCO Feb Peb 11 I- I The United States grand jury is in possession of corroborative corroborative corroborative evidence of existence of the thc II slacker letters letters' which Mrs 1 Maxine Dempsey former who of the worlds world's heavyweight champion Jack Dempsey claims involve the heavyweight king kingin in charges of having evaded military duty it became known l this thin afternoon It was rca at the Federal building that several arrests in connection with the case would be made I shortly after the inquisitors had I finished their probe of the case I I Knowledge that the federal authorities were in possession of such evidence it is said was responsible responsible responsible re re- re- re for Mrs Dempsey repudiating her affidavit in which she gave the champion a a. clean bill of health and expressed expressed expressed ex ex- pressed regret at having done him she termed an injustice injustice tice |