Castle Howard and the subject matter of history -- The appearance of truth and the truth of appearance in Laugier's primitive hut -- From imitation to abstraction in the neoclassicism of Boullee, Soane, and Schinkel -- Pugin, Labrouste, and the new realism of decorated construction -- Essays in the erosion of representation by Viollet-Le-Duc and Louis Sullivan -- Representation without history in the architecture of Frank Lloyd Wright -- The reemergence of representation out of abstraction in Mies van der Rohe -- The aesthetic of the unfinished and the example of Louis Kahn