1904 Louisiana Purchase Exposition Postcards. A wonderful balance lot of better mint & used Expo. Cards, some Expo. cancels included, manufactures include "Hesse", "Buxton & Skinner", "S.G. Adams", "Pinkau & Blanke's", etc., overall condition is well above average with many pristine cards, Very Fine. Estimate  $300 - 400. $0 (Image)