Royo
Cover Art by 3
 | Heavy Metal (October 1983) | Magazine |
 | The Hormone Jungle | Mass-Market Paperback |
 | Islands in the Net | Mass-Market Paperback |
Cover Artist 6
 | Fundación y Tierra | Soft cover |
 | Preludio a la Fundación | Soft cover |
 | Cuando Falla la Gravedad | Soft cover |
 | El Beso del Exilio | Soft cover |
 | Un Fuego en el Sol | Soft cover |
 | Robots e Imperio | Soft cover |