If an artist died 140 years ago, but images of his work went mostly unpublished till the 1960's and later, and *those images* are copyrighted, does vectorizing, extensively cleaning up, removing design elements etc. leave me with something legally saleable on screenprinted garments? Does their copyright only cover the original image, pixel for pixel? Shepard Fairy/HOPE case? That photographer was still living, does that make a difference? Am swimming in grey area.