1901 Pan American Exposition (Buffalo, N.Y.). A wonderful balance lot in one album of covers with Expo. cancels & advertising, Expo. cards, trade cards, entrance tickets, etc., included are many better Expo. Cancels, many lovely Illustrated Expo. Advertising covers & cards, plus much more, mixed condition, please inspect as many rare & valuable items are included. Estimate  $3,000 - 4,000. $0 (Image)