 Complete the following phrase:  Joseph H. Chapin, the art editor of Scribners Magazine, discovered one of Clarks drawings on a classroom wall and gave him his first commission, to illustrate a story by Rudyard Kipling. In 1899, after achieving rapid success illustrating books and magazine stories, Clark returned to the Art Student League as a teacher. He also taught briefly at the Pennsylvania Academy of the Fine Arts. Clark won medals at the 