This is a PIRATE printing done in England in the early 1970's. "San Francisco Poster Co." appears in the lower right corner. "Mouse! Studios-66" appears in the bottom margin. "Bindweed Press" credit does not appear.Image taken from a 1913 woodcut by artist Edmund Sullivan, originally done to illustrate the 26th quatrain of The Rubaiyat of Omar Khayyam, this block print underscores the verse "The Flower that once has blown for ever dies."
see also Mouse's Skeleton & Roses Part of the Smithsonian's '20th Century American Posters' book and exhibit.