During the 1960s, Robert Motherwell's art continued to evolve, reflecting both his deep intellectual engagements and his innovations in abstract expressionism. This decade was marked by significant exhibitions and the development of new series that expanded his exploration of abstract forms and themes. Motherwell's work during this period included a wide range of exhibitions both in America and Europe, highlighting his growing influence and recognition within the art world. One of the pivotal moments of the 1960s for Motherwell was in 1965 when he became one of the first artists of his generation to be given a retrospective exhibition at the Museum of Modern Art (MoMA)​ (The Dedalus Foundation)​. This recognition was a testament to his significant contributions to abstract expressionism and his role as a leading figure within the movement. In 1967, Motherwell began working on his "Open" series, characterized by a more austere approach compared to his earlier works. The "Open" series featured a simpler formal structure, often consisting of a two or three-sided rectilinear box set against a mostly monochromatic field. This series represented a new phase in Motherwell's artistic exploration, focusing on spatial dynamics and the interplay of form and color within a more restrained compositional framework​ (The Art Story)​. Throughout the 1960s, Motherwell's interest in printmaking also became more pronounced. He began to reinvent his collages as limited editions of lithographic prints, incorporating elements from his daily life, such as cigarette wrappers. This move towards printmaking demonstrated Motherwell's ongoing experimentation with different media and his ability to translate his abstract expressionist vision across various forms​ (The Art Story)​. The decade also saw Motherwell's continued engagement with themes of political and personal significance, maintaining the dialogue between the formal compositions of European modernism and the emotionally expressive methods characteristic of the Abstract Expressionist movement. Through his art, Motherwell navigated the space between abstraction and representation, exploring the depths of human emotion and the existential concerns of the modern era​ (The Art Story)​. The 1960s were a period of significant achievement and innovation for Robert Motherwell, marked by critical acclaim, influential exhibitions, and the deepening of his artistic inquiries into the possibilities of abstraction.