Stanley Mouse Hand Signed and Numbered 223/225 Easy Rider Lithograph Greatful Dead Art. Stanley George Miller (born October 10, 1940), better known as Mouse or Stanley Mouse, is an American artist who is notable for his 1960s psychedelic rock concert poster designs and album covers for the Grateful Dead, Journey, and other bands. This is a very cool Stanley Mouse Greatful Dead Lithograph, of a Skelton sitting on a stool playing a Guitar. He has Roses that looks like his hair. It is in very good condition. The Lithograph measures 10 1/2 by 16 1/2 inches.