Robert Ryman's art in the 1990s continued to explore and challenge the boundaries and possibilities of painting, emphasizing materiality, texture, and the interplay of light and surface. During this period, his work remained deeply engaged with the conceptual and physical aspects of painting, an exploration he had pursued since the 1960s. Ryman's prints and works on paper, similar to his paintings, necessitated a closer inspection by viewers to appreciate the subtle intricacies and the meticulous attention to surface texture and detail. He maintained a minimalist approach, with a focus on the essence of the materials and the act of painting itself​ (Wikipedia)​. In the 1990s, Ryman continued to receive significant recognition and participated in important exhibitions. His works were featured in major museums and galleries worldwide, contributing to his status as a key figure in contemporary art. The decade saw Ryman engaging in innovative artistic processes and experimenting with various materials, underscoring his commitment to expanding the scope of painting​ (Wikipedia)​. One notable work from this period, Versions IV (1992), exemplifies Ryman's experimental approach to medium and form. This piece, created with oil and graphite on an acrylic resin sheet with embedded fiberglass (Lumasite) and wax paper, showcases his continued exploration of the painting's physicality and its interaction with light and space. The work's presence in the Metropolitan Museum of Art's collection highlights its significance and Ryman's enduring influence on contemporary art​ (The Metropolitan Museum of Art)​. Ryman's artistic practice in the 1990s and beyond remained characterized by a profound investigation into the fundamentals of painting—its materials, methods, and modes of presentation. His late works, produced in 2010 and 2011, exhibit a consistent engagement with the medium of oil on canvas, featuring heavily worked surfaces with dense, gestural strokes of paint. These pieces reflect a vibrant culmination of Ryman's lifelong dedication to exploring the potential of white paint and its textural possibilities. The emphasis on the physical act of painting and the surface of the canvas remained central, encapsulating Ryman's enduring fascination with the essence of painting itself​ (David Zwirner)​. Throughout the 1990s and into the last years of his career, Ryman's work continued to captivate and challenge viewers, offering a rich, nuanced exploration of painting's possibilities. His legacy is one of rigorous inquiry and a profound commitment to the medium, which has left an indelible mark on the landscape of contemporary art.