Robert Crumb first began drawing record covers in 1968 when Janis Joplin, a fellow Haight Ashbury denizen, asked him to provide a cover for her album Cheap Thrills. It was an invitation the budding artist couldn't resist, especially since he had been fascinated with record covers-particularly for the legendary jazz, country, and old-time blues music of the 1920s and 1930s-since he was a teen. This early collaboration proved so successful that Crumb...