1904 St. Louis World's Fair Palace of Horticulture HTL PC

Front:
HOLD CARD TO LIGHT. OFFICIAL SOUVENIR WORLD'S FAIR ST.LOUIS 1904 Palace of Horticulture. Samuel Cupples Envelope Co., St. Louls, Mo, World' Fair Stetieners,

Back:
PEACE STAMP HERE ONE CENT STAMP s & MEXICO TWO CENT STAMP FOR ALL OTHER COUNTRIES