During the last two decades of his life, Carver seemed to enjoy his celebrity status. He was often on the road promoting Tuskegee University, peanuts, and racial harmony. Although he only published six agricultural bulletins after 1922, he published articles in peanut industry journals and wrote a syndicated newspaper column, "Professor Carver's Advice". Business leaders came to seek his help, and he often responded with free advice. Three American presidents—Theodore Roosevelt, Calvin Coolidge and Franklin Roosevelt—met with him, and the Crown Prince of Sweden studied with him for three weeks. From 1923 to 1933, Carver toured white Southern colleges for the Commission on Interracial Cooperation.