Government Building -Official Souvenir of the World's Fair, St. Louis, 1904

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

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