1876 Centennial International Exposition, group of 12 items and two groups of multicolor building cards, includes: 3¢ green Centennial envelope with exposition postmark (Bomar P76-01) with typewriter address (faults), green Congress Hall ad cover, Kansas State expo building ad cover, two covers addressed to Centennial grounds, some ad covers for companies displaying goods at the expo, 50¢ package ticket, etc.; some mixed condition, Fine. Estimate  $200 - 300. $0 (Image)