These beautiful First-Class stamps from the U.S. Postal Service, based on photographs of seed packets from a century ago, were dedicated at the Philadelphia National Stamp Exhibition. At the turn of the early 1900s, packets like those displayed on the stamps encouraged Americans to create the perfect floral garden. The Postal Service's release of these stamps reminds us about the beauty flowers add to our lives and signals the arrival of spring. Created using chromolithography a process that replaced hand-tinted lithographs and allowed for inexpensive multi-color prints the illustrations originally graced the fronts of flower seed packets printed between 1910 and 1920. Each of the 10 stamps depicts blossoms of one variety of flower a trio of cosmos in delicate white, pink, and red; stalks of yellow, pink and coral digitalis; bright yellow primrose flowers with orange centers; a vibrant orange calendula; white, pink and blue aster blooms; two shades of pinks (dianthus), one pale, one dark; linum blossoms in a rich red; white drifts of alyssum; clusters of phlox in red, pink and purple; and pale pink, subtle yellow, and muted orange-red zinnia flowers. This listing is for 20 stamps (1 booklet of 20).