Butterfields in Chicago will host an appraisal clinic for potential consignors on August 7th. Specialists include Thomas de Doncker in American Paintings, Ellie Thompson, G. G. in Jewelry, Gary Espinosa in Decorative Arts, Georgina Wilsenach for European Paintings, Dessa Goddard in Asian Works of Art, Dr. Catherine Williamson in Books & Manuscripts and Kate Lusheck for Modern & Contemporary Art. Butterfields is an eBay company.