Illustration Art. An illustration is a work of art that is created to provide a visual representation to a story, poem, newspaper article, etc. There is a growing interest in collecting and admiring original artwork that was used as illustrations in books, magazines, posters, etc. Museum exhibitions and art galleries devoted space to Illustration Art. The works of Howard Pyle, N.C. Wyeth, Maxfield Parrish, Tom Lovell, Dean Cornwell and Norman Rockwell are a good example.