RES 63/64, Wet/Dry, includes "Source and trace" by Christopher S. Wood; "Climatic variability and pictorial oscillation" by Whitney Davis; "Timelessness, fluidity, and Apollo's libation" by Milette Gaifman; "A liquid history: Blood and animation in late medieval art" by Beate Fricke; "Drawing blood" by Anne Dunlop; "Guercino's 'wet' drawing" by Nicola Suthor; "Volcano equals head equals kiln equals phallus: Connecting Gauguin's metaphors of the creative act" by Dario Gamboni; "On sources: Mythical and historical thinking in fin-de-siècle Vienna" by Mario Wimmer; "A Neolithic childhood: Children's drawings as prehistoric sources" by Barbara Wittmann; "The form of the indistinct: Picasso and the rise of generic creativity" by Gabriele Guercio; "Source and trace in Walter Benjamin's thought: About a polarity" by Chiara Cappelletto; "Modern architecture and prehistory: Retracing The Eternal Present" by Spyros Papapetros; and "The readymade metabolized: Fluxus in life" by David Joselit. Contributors to Lectures, Documents, and Discussions include Remo Guidieri; Félix Duque; Marvin Trachtenberg; Frank Fehrenbach; Alexander Nemerov; Robert Smithson and Alexander Nagel; Francesco Pellizzi; Jörg Trempler; Aurélie Verdier; Anna Begicheva and Natasha Kurchanova; and D. Graham Burnett, Jac Mullen, and Sal Randolph.