Show Once In Jeopardy Is Enough Washington Tho supreme court of the United States has affirmed the decision of the United States district court for the District ot Columbia In tho cases of William R Mason and Joseph Vandorweldc who wore charged with Uio murder In 1907 of Joseph A Walker ft 1 special agent of tho department oft j Justice whllo In tho discharge of his duty Walker was killed by Vanderwelde while standing guard at tho mouth of a coal mine In I La Plata county Colorado and ho and Mason who was with him at tho I tlmo of tho shooting pleaded selfde fense + I i |