Show Hoover to Lay Commerce Building Cornerstone WASHINGTON May 27 7 AP Ar- Ar President Hoover will lay the cornerstone cornerstone cornerstone cor cor- for the tho new department of commerce building next Monday This structure one ona of ot tho the group roup of or magnificent federal buildings to tobe tobe tobe be constructed in the Pennsylvania avenue rn triangle will cover two city blocks and will have ha the largest area of or any office building in the world It will bo be located on I Fifteenth street within half halt a n block of ot the treasury building |