For one weekend every year, the J.C. Penney Conference Center at the University of Missouri-St. Louis transforms into an art and book lover’s paradise. And this year, people can take it all in for free. Local artists Erin Blumer and Juliette Travous, who will be giving watercolor and pastel demonstrations during the final day of the fair, and the Mercantile Library’s fine arts curator, Julie Dunn-Morton, discuss the 13th annual event.