Richard Pettibone's *Untitled (train series)* (1967) exemplifies the artist's signature appropriation-based practice, reducing and replicating imagery with meticulous precision on a diminutive scale. The work engages with themes of mechanical reproduction and consumer culture, reflecting Pettibone's fascination with the tension between originality and copies. Created during a pivotal moment in the development of Appropriation Art, this piece situates Pettibone alongside his contemporaries while establishing his distinctive, intimate aesthetic.