Government Building, 1904 World's Fair, St. Louis

Front:
OFFICIAL SOUVENIR WORLD'S FAIR-ST. LOUIS 1904 Government Building SAMUEL CUPPLES ENVELOPE CO.ST. LOUIS.MO:SOLE WORLDS FAIR STATIONERS HWunderlich

Back:
D'S WORL FAIR 1904 POST CARD * PLACE STAMP HERE. ONE CENT STAMP FOR UNITED STATES, CANADA & MEXICO. TWO CENT STAMP FOR ALL OTHER COUNTRIES. ST.LOUIS THIS SIDE FOR THE ADDRESS ONLY