– Presented the Robert J. Oppenheimer Memorial Lecture, Los Alamos, NM, 1990. [click on video link to excerpts]
– One-man retrospective show, Eiteljorg Museum of the American Indian and Western Art, Indianapolis, 1991. Presented Eiteljorg Award.
– In the fall of 1991 he began painting a commission for the National Cowboy Hall of Fame (later the National Cowboy Museum) in Oklahoma City, consisting of 5 triptychs for the Sam Noble Activities Center. The five centerpieces of each triptych measure 16 feet by 16 feet, and the ten side pieces are each 16 feet by 10 feet. The work was completed in August of 1996.
– Elected to Oklahoma Hall of Fame, Oklahoma City, 1996.