This is the original cover painting for the biography of Janis Joplin, by Myra Friedman, for the 1st UK edition published by W.H.Allen 1974. .  A stunning painting, fully capturing the drama, violence and emotional intensity of Joplin's life  - painted in gouache on illustration board, 20" x 10" and comes with a label attesting to its authenticity signed by Pether's widow, mounted to the back.  There are few covers in Pether's inventory that can compare to this one in terms of pop cultural appeal - a truly rare find!