 Buell's mother, Marjorie Henderson Buell was the creator of the Little Lulu cartoon series, begun in the 1930s.In July 2006, Buell and his brother Fred donated the “Marge Papers,” to the Schlesinger Library at Harvard.The papers include a collection of fan letters, comic books, scrapbooks of high points in Lulu’s history, and a complete set of the newspaper cartoons.