This is a 1978 set of United States Postal Service Commemorative stamps, including 28 unique stamps in a its original issue binder and envelope. The 13 and 15 cent stamps are in the sets original condition, never used, having been stored in the binder and outer envelope since purchased in 1978. The stamps and folder are in great shape. The outer white envelope (marked "1978 Mint set, item no. 937) has shelf wear on the edges and corners and is lightly yellowed with age. The 1978 stamp lot includes: Carl Sandburg Captain James Cook Harriet Tubman American Quilts (block of 4 unique stamps) American Dance (block of 4 -Modern, Folk, Ballet, Theater) the French Alliance Dr George Papanicolaous - Early Cancer Detection Jimmie Rodgers Photography George M Cohan Viking Missions American Owls (block of 4 -Barred, Great Gray, Saw-Whet, Great Horned) American Trees (block of 4 - Giant Sequoia, White Pine, White Oak, Gray Birch) Madonna and Child (Christmas) Hobby Horse (Christmas)