As I recounted in a blog post on this site, I had an idea for cachets for the USPS Botanical Art stamps — but to create them, I had to find the source images for each of the stamps. The extremely helpful Public Services Librarian at the Mertz Library of the New York Botanical Garden helped me track them all down.
For each of the ten covers, the cachet is composed of the page from the nursery catalog from which the stamp image was cropped, the name of the flowers depicted, and the date of the catalog's release. Click on any for a larger image.